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Torres-Sánchez, Pablo ; Praena, Javier ; Porras Sánchez, José Ignacio ; Sabaté-Gilarte, Marta ; Lederer-Woods, Claudia ; Aberle, Oliver ; Alcayne, Victor ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Babiano Suarez, Victor ; Bacak, Michael ; Barbagallo, Massimo ; Bečvář, František ; Bellia, Giorgio ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Busso, Maurizio ; Caamaño, Manuel ; Caballero Ontanaya, Luis ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Casanovas Hoste, Adrià ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Diakaki, Maria ; Dietz, Mirco ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Ferrer, Francisco Javier ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Garg, Ruchi ; Gawlik-Ramięga, Aleksandra ; Geslot, Benoit ; Gilardoni, Simone ; Glodariu, Tudor ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Harada, Hideo ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Kadi, Yacine ; Kimura, Atsushi ; Kivel, Nikolay ; Kokkoris, Michael ; Kopatch, Yuri N. ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Ladarescu, Ion ; Leeb, Helmut ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Lonsdale, Sarah Jane ; Macina, Daniela ; Manna, Alice ; Martínez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Quesada Molina, José Manuel ; Radeck, Désirée ; Ramos Doval, Diego ; Rauscher, Thomas ; Reifarth, René ; Rochman, Dimitri ; Rubbia, Carlo ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, Jose Luis ; Talip, Zeynep ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
The 14N(n,p)14C reaction is of interest in neutron capture therapy, where nitrogen-related dose is the main component due to low-energy neutrons, and in astrophysics, where 14N acts as a neutron poison in the s-process. Several discrepancies remain between the existing data obtained in partial energy ranges: thermal energy, keV region and resonance region. Purpose: Measuring the 14N(n,p)14C cross section from thermal to the resonance region in a single measurement for the first time, including characterization of the first resonances, and providing calculations of Maxwellian averaged cross sections (MACS). Method: Time-of-flight technique. Experimental Area 2 (EAR-2) of the neutron time-of-flight (n_TOF) facility at CERN. 10B(n,α)7Li and 235U(n,f) reactions as references. Two detection systems running simultaneously, one on-beam and another off-beam. Description of the resonances with the R-matrix code sammy. Results: The cross section has been measured from sub-thermal energy to 800 keV resolving the two first resonances (at 492.7 and 644 keV). A thermal cross-section (1.809±0.045 b) lower than the two most recent measurements by slightly more than one standard deviation, but in line with the ENDF/B-VIII.0 and JEFF-3.3 evaluations has been obtained. A 1/v energy dependence of the cross section has been confirmed up to tens of keV neutron energy. The low energy tail of the first resonance at 492.7 keV is lower than suggested by evaluated values, while the overall resonance strength agrees with evaluations. Conclusions: Our measurement has allowed to determine the 14N(n,p) cross-section over a wide energy range for the first time. We have obtained cross-sections with high accuracy (2.5 %) from sub-thermal energy to 800 keV and used these data to calculate the MACS for kT = 5 to kT = 100 keV.
Oprea, Andreea ; Gunsing, Frank ; Schillebeeckx, Peter ; Aberle, Oliver ; Bacak, Michael ; Berthoumieux, Eric ; Cano-Ott, Daniel ; Diakaki, Maria ; Dupont, Emmeric ; Geslot, Benoit ; Glodariu, Tudor ; Heyse, Jan ; Mendoza Cembranos, Emilio ; Negret, Alexandru ; Alcayne, Victor ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Babiano Suarez, Victor ; Barbagallo, Massimo ; Bečvář, František ; Bellia, Giorgio ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Busso, Maurizio ; Caamaño, Manuel ; Caballero Ontanaya, Luis ; Calviño Tavares, Francisco ; Calviani, Marco ; Casanovas Hoste, Adrià ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Dietz, Mirco ; Domingo-Pardo, César ; Dressler, Rugard ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Garg, Ruchi ; Gawlik, Aleksandra ; Gilardoni, Simone ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Guerrero Sánchez, Carlos ; Harada, Hideo ; Heinitz, Stephan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Kadi, Yacine ; Kimura, Atsushi ; Kivel, Nikolay ; Kokkoris, Michael ; Kopatch, Yuri N. ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Ladarescu, Ion ; Lederer-Woods, Claudia ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Lonsdale, Sarah Jane ; Macina, Daniela ; Manna, Alice ; Martı́nez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Nolte, Ralf ; Ogállar Ruiz, Francisco ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Radeck, Désirée ; Ramos Doval, Diego ; Reifarth, René ; Rochman, Dimitri ; Rubbia, Carlo ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schumann, Dorothea ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Talip, T. ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Torres-Sánchez, Pablo ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
Neutron capture on 241Am plays an important role in the nuclear energy production and also provides valuable information for the improvement of nuclear models and the statistical interpretation of the nuclear properties. A new experiment to measure the 241Am(n, γ) cross section in the thermal region and the first few resonances below 10 eV has been carried out at EAR2 of the n_TOF facility at CERN. Three neutron-insensitive C6D6 detectors have been used to measure the neutron-capture gamma cascade as a function of the neutron time of flight, and then deduce the neutron capture yield. Preliminary results will be presented and compared with previously obtained results at the same facility in EAR1. In EAR1 the gamma-ray background at thermal energies was about 90% of the signal while in EAR2 is up to a 25 factor much more favorable signal to noise ratio. We also extended the low energy limit down to subthermal energies. This measurement will allow a comparison with neutron capture measurements conducted at reactors and using a different experimental technique.
Moreno-Soto, Javier ; Valenta, Stanislav ; Berthoumieux, Eric ; Chebboubi, Abdelaziz ; Diakaki, Maria ; Dridi, Wissem ; Dupont, Emmeric ; Gunsing, Frank ; Krtička, Milan ; Litaize, Olivier ; Serot, Olivier ; Aberle, Oliver ; Alcayne, Victor ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Babiano Suarez, Victor ; Bacak, Michael ; Barbagallo, Massimo ; Thomas, Benedikt ; Bennett, Samuel ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Busso, Maurizio ; Caamano, Manuel ; Caballero Ontanaya, Luis ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Casanovas Hoste, Adrià ; Cerutti, Francesco ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Davies, Paul John ; Dietz, Mirco ; Domingo-Pardo, César ; Dressler, Rugard ; Ducasse, Quentin ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Gawlik-Ramiega, Aleksandra ; Gilardoni, Simone ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Guerrero Sánchez, Carlos ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Junghans, Arnd Rudolf ; Käppeler, Franz ; Kadi, Yacine ; Kimura, Atsushi ; Knapova, Ingrid ; Kokkoris, Michael ; Kopatch, Yuri N. ; Kurtulgil, Cem Deniz ; Ladarescu, Ion ; Lampoudis, Christos ; Lederer-Woods, Claudia ; Lonsdale, Sarah Jane ; Macina, Daniela ; Manna, Alice ; Martinez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Petrone, Cristina ; Pirovano, Elisa ; Porras, Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Ramos Doval, Diego ; Rauscher, Thomas ; Reifarth, René ; Rochman, Dimitri ; Sabate-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Sekhar, Adhitya ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Sprung, Peter ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeno-Saldivia, Ariel ; Tassan-Got, Laurent ; Torres-Sanchez, Pablo ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vescovi, Diego ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
Background: The photon strength functions (PSFs) and nuclear level density (NLD) are key ingredients for calculation of the photon interaction with nuclei, in particular the reaction cross sections. These cross sections are important especially in nuclear astrophysics and in the development of advanced nuclear technologies.
Purpose: The role of the scissors mode in the M1 PSF of (well-deformed) actinides was investigated by several experimental techniques. The analyses of different experiments result in significant differences, especially on the strength of the mode. The shape of the low-energy tail of the giant electric dipole resonance is uncertain as well. In particular, some works proposed a presence of the E1 pygmy resonance just above 7 MeV. Because of these inconsistencies additional information on PSFs in this region is of great interest.
Methods: The γ-ray spectra from neutron-capture reactions on the 234U, 236 U, and 238 U nuclei have been measured with the total absorption calorimeter of the n_TOF facility at CERN. The background-corrected sum-energy and multi-step-cascade spectra were extracted for several isolated s-wave resonances up to about 140 eV.
Results: The experimental spectra were compared to statistical model predictions coming from a large selection of models of photon strength functions and nuclear level density. No combination of PSF and NLD models from literature is able to globally describe our spectra. After extensive search we were able to find model combinations with modified generalized Lorentzian (MGLO) E1 PSF, which match the experimental spectra as well as the total radiative widths.
Conclusions: The constant temperature energy dependence is favored for a NLD. The tail of giant electric dipole resonance is well described by the MGLO model of the E1 PSF with no hint of pygmy resonance. The M1 PSF must contain a very strong, relatively wide, and likely double-resonance scissors mode. The mode is responsible for about a half of the total radiative width of neutron resonances and significantly affects the radiative cross section.
Study of the photon strength functions and level density in the gamma decay of the n + 234U reaction
(2019)
Moreno-Soto, Javier ; Berthoumieux, Eric ; Dupont, Emmeric ; Gunsing, Frank ; Serot, Olivier ; Litaize, Olivier ; Diakaki, Maria ; Chebboubi, Abdelhazize ; Dridi, Wissem ; Valenta, Stanislav ; Krtička, Milan ; Aberle, Oliver ; Alcayne, Victor ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Babiano Suarez, Victor ; Bacak, Michael ; Barbagallo, Massimo ; Benedikt, Thomas ; Bennett, Samuel ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Busso, Maurizio ; Caamaño, Manuel ; Caballero Ontanaya, Luis ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Casanovas Hoste, Adrià ; Cerutti, Francesco ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Davies, Paul John ; Dietz, Mirco ; Domingo-Pardo, César ; Dressler, Rugard ; Ducasse, Quentin ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Gawlik, Aleksandra ; Gilardoni, Simone ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Guerrero Sánchez, Carlos ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Junghans, Arnd Rudolf ; Käppeler, Franz ; Kadi, Yacine ; Kimura, Akinori ; Knapová, Ingrid ; Kokkoris, Michael ; Kopatch, Yuri N. ; Kurtulgil, Cem Deniz ; Ladarescu, Ion ; Lederer-Woods, Claudia ; Lonsdale, Sarah Jane ; Macina, Daniela ; Manna, Alice ; Martı́nez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Negret, Alexandru ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Petrone, Cristina ; Pirovano, Elisa ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Ramos Doval, Diego ; Rauscher, Thomas ; Reifarth, René ; Rochman, Dimitri ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Sekhar, Adhitya ; Simone, S. ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Sprung, Peter ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vescovi, Diego ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
The accurate calculations of neutron-induced reaction cross sections are relevant for many nuclear applications. The photon strength functions and nuclear level densities are essential inputs for such calculations. These quantities for 235U are studied using the measurement of the gamma de-excitation cascades in radiative capture on 234U with the Total Absorption Calorimeter at n_TOF at CERN. This segmented 4π gamma calorimeter is designed to detect gamma rays emitted from the nucleus with high efficiency. This experiment provides information on gamma multiplicity and gamma spectra that can be compared with numerical simulations. The code DICEBOXC is used to simulate the gamma cascades while GEANT4 is used for the simulation of the interaction of these gammas with the TAC materials. Available models and their parameters are being tested using the present data. Some preliminary results of this ongoing study are presented and discussed.
Mendoza Cembranos, Emilio ; Alcayne, Victor ; Cano-Ott, Daniel ; Kimura, Atsushi ; Skarbeli, A. V. ; Aberle, Oliver ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Babiano Suarez, Victor ; Bacak, Michael ; Barbagallo, Massimo ; Bécares, Vicente ; Bečvář, František ; Bellia, Giorgio ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam S. ; Busso, Maurizio ; Caamaño, Manuel ; Caballero Ontanaya, Luis ; Calviani, Marco ; Calviño Tavares, Francisco ; Casanovas Hoste, Adrià ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Diakaki, Maria ; Dietz, Mirco ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Gonçalves, Isabel Maria Ferro ; Finocchiaro, Paolo ; Furman, Valter ; Garg, Ruchi ; Gawlik, Aleksandra ; Gilardoni, Simone ; Glodariu, Tudor ; Göbel, Kathrin ; González Romero, Enrique Miguel ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Kadi, Yacine ; Käppeler, Franz ; Kivel, Nikolay ; Kokkoris, Michael ; Kopatch, Yuri N. ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Ladarescu, Ion ; Lederer-Woods, Claudia ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Lonsdale, Sarah-Jane ; Macina, Daniela ; Manna, Alice ; Martı́nez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Radeck, Désirée ; Ramos Doval, Diego ; Reifarth, René ; Rochman, Dimitri ; Rubbia, Carlo ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Talip, Zeynep ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Torres-Sánchez, Pablo ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias J. ; Žugec, Petar
We have measured the γ-rays following neutron capture on 240Pu and 244 Cm at the n_TOF facility at CERN with the Total Absorption Calorimeter (TAC) and with C6D6 organic scintillators. The TAC is made of 40 BaF2 crystals operating in coincidence and covering almost the entire solid angle. This allows to obtain information concerning the energy spectra and the multiplicity of the measured capture γ-ray cascades. Additional information is also obtained from the C6D6 detectors. We have analyzed the measured data in order to draw conclusions about the Photon Strength Functions (PSFs) of 241Pu and 245Cm below their neutron separation energies. The analysis has been performed by fitting the PSFs to the experimental results, using the differential evolution method, in order to find neutron capture cascades capable of reproducing at the same time a great variety of deposited energy spectra.
Mazzone, Annamaria ; Cristallo, Sergio ; Aberle, Oliver ; Alaerts, Gery ; Alcayne, Victor ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Babiano Suarez, Victor ; Bacak, Michael ; Barbagallo, Massimo ; Bécares, Vicente ; Bečvář, František ; Bellia, Giorgio ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam S. ; Busso, Maurizio ; Caamaño, Manuel ; Caballero Ontanaya, Luis ; Calviani, Marco ; Calviño Tavares, Francisco ; Cano-Ott, Daniel ; Casanovas Hoste, Adrià ; Castelluccio, Donato Maurizio ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Clai, Giulia ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Damone, Lucia Anna ; Diakaki, Maria ; Dietz, Mirco ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Gonçalves, Isabel Maria Ferro ; Finocchiaro, Paolo ; Furman, Valter ; Garg, Ruchi ; Gawlik, Aleksandra ; Gilardoni, Simone ; Glodariu, Tudor ; Göbel, Kathrin ; González Romero, Enrique Miguel ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Kadi, Yacine ; Käppeler, Franz ; Kimura, Atsushi ; Kivel, Nikolay ; Kokkoris, Michael ; Kopatch, Yuri N. ; Kopecky, Stefan ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Ladarescu, Ion ; Lederer-Woods, Claudia ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Lonsdale, Sarah-Jane ; Macina, Daniela ; Manna, Alice ; Martínez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Maugeri, Emilio Andrea ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Mucciola, Riccardo ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Radeck, Désirée ; Ramos Doval, Diego ; Reifarth, René ; Rochman, Dimitri ; Rubbia, Carlo ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Talip, Zeynep ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Torres-Sánchez, Pablo ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vescovi, Diego ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wynants, Ruud ; Wright, Tobias J. ; Žugec, Petar
The neutron capture cross section of 154Gd was measured from 1 eV to 300 keV in the experimental area located 185 m from the CERN n_TOF neutron spallation source, using a metallic sample of gadolinium, enriched to 67% in 154Gd. The capture measurement, performed with four C6D6 scintillation detectors, has been complemented by a transmission measurement performed at the GELINA time-of-flight facility (JRC-Geel), thus minimising the uncertainty related to sample composition. An accurate Maxwellian averaged capture cross section (MACS) was deduced over the temperature range of interest for s process nucleosynthesis modelling. We report a value of 880(50) mb for the MACS at kT = 30 keV, significantly lower compared to values available in literature. The new adopted 154Gd(n,γ) cross section reduces the discrepancy between observed and calculated solar s-only isotopic abundances predicted by s-process nucleosynthesis models.
Cortese, Pietro ; Abelev, Betty ; Adam, Jaroslav ; Adamová, Dagmar ; Adare, A. M. ; Aggarwal, Madan Mohan ; Aglieri Rinella, Gianluca ; Agocs, A. G. ; Agostinelli, A. ; Aguilar Salazar, S. ; Ahammed, Zubayer ; Ahmad, Nazeer ; Ahmad Masoodi, A. ; Ahn, Sang Un ; Akindinov, Alexander ; Aleksandrov, Dmitry ; Alessandro, Bruno ; Alfaro Molina, Jose Ruben ; Alici, Andrea ; Alkin, Anton ; Almaraz Avina, E. ; Alme, Johan ; Alt, Torsten ; Altini, V. ; Altinpinar, Sedat ; Altsybeev, Igor ; Andrei, Cristian ; Andronic, Anton ; Anguelov, Venelin ; Anielski, Jonas ; Anson, Christopher Daniel ; Antičić, Tome ; Antinori, Federico ; Antonioli, Pietro ; Aphecetche, Laurent Bernard ; Appelshäuser, Harald ; Arbor, N. ; Arcelli, Silvia ; Arend, A. ; Armesto, Néstor ; Arnaldi, Roberta ; Aronsson, Tomas Robert ; Arsene, Ionut Cristian ; Arslandok, Mesut ; Asryan, A. ; Augustinus, Andre ; Averbeck, Ralf Peter ; Awes, T. C. ; Aysto, J. ; Azmi, Mohd Danish ; Bach, Matthias ; Badalà, Angela ; Baek, Yong Wook ; Bailhache, Raphaëlle ; Bala, Remu ; Baldini Ferroli, Rinaldo ; Baldisseri, Alberto ; Baldit, A. ; Baltasar Dos Santos Pedrosa, Fernando ; Ban, J. ; Baral, Rama Chandra ; Barbera, Roberto ; Barile, Francesco ; Barnaföldi, Gergely Gábor ; Barnby, Lee Stuart ; Barret, Valerie ; Bartke, Jerzy ; Basile, Maurizio ; Bastid, Nicole ; Basu, Sumit ; Bathen, Bastian ; Batigne, Guillaume ; Batyunya, Boris ; Baumann, C. ; Bearden, Ian Gardner ; Beck, Hans ; Belikov, Iouri ; Bellini, Francesca ; Bellwied, Rene ; Belmont-Moreno, Ernesto ; Bencédi, Gyula ; Beolè, Stefania ; Berceanu, Ionela ; Bercuci, Alexandru ; Berdnikov, Yaroslav ; Berényi, Dániel ; Berzano, Dario ; Betev, Latchezar ; Bhasin, Anju ; Bhati, Ashok Kumar ; Bhom, Jihyun ; Bianchi, Nicola ; Bianchi, Livio ; Bianchin, Chiara ; Bielčík, Jaroslav ; Bielčíková, Jana ; Bilandzic, Ante ; Bjelogrlic, Sandro ; Blanco, Fernando ; Blanco, Fernando ; Blau, Dmitry S. ; Blume, Christoph ; Boccioli, M. ; Bock, N. ; Bogdanov, Alexey A. ; Boggild, H. ; Bogolyubsky, M. ; Boldizsar, László ; Bombara, Marek ; Book, Julian ; Borel, Hervé ; Borissov, Alexander ; Bose, S. ; Bossú, Francesco ; Botje, Michiel ; Bottger, Stefan ; Boyer, B. ; Braidot, E. ; Braun-Munzinger, Peter ; Bregant, Marco ; Breitner, Timo ; Browning, Tyler Allen ; Broz, Michal ; Brun, René ; Bruna, Elena ; Bruno, Giuseppe Eugenio ; Budnikov, Dmitry ; Büsching, Henner ; Bufalino, Stefania ; Bugaiev, K. ; Busch, Oliver ; Buthelezi, Edith Zinhle ; Caballero Orduna, D. ; Caffarri, Davide ; Cai, Xiao ; Caines, Helen Louise ; Calvo Villar, Ernesto ; Camerini, Paolo ; Canoa Roman, Veronica ; Cara Romeo, G. ; Carena, Wisla ; Carena, Francesco ; Carlin Filho, N. ; Carminati, F. ; Carrillo Montoya, C. A. ; Casanova Diaz, A. ; Castillo Castellanos, Javier Ernesto ; Castillo Hernández, Juan Francisco ; Casula, E. A.R. ; Catanescu, V. ; Cavicchioli, Costanza ; Ceballos Sanchez, Cesar ; Čepila, Jan ; Cerello, Piergiorgio ; Chang, B. ; Chapeland, Sylvain ; Charvet, Jean-Luc Fernand ; Chattopadhyay, S. ; Chattopadhyay, S. ; Chawla, I. ; Cherney, Michael Gerard ; Cheshkov, Cvetan Valeriev ; Cheynis, Brigitte ; Chibante Barroso, Vasco Miguel ; Chinellato, David Dobrigkeit ; Chochula, Peter ; Chojnacki, Marek ; Choudhury, Subikash ; Christakoglou, Panagiotis ; Christensen, Christian Holm ; Christiansen, Peter L. ; Chujo, Tatsuya ; Chung, Suh-Urk ; Cicalò, Corrado ; Cifarelli, Luisa ; Cindolo, Federico ; Cleymans, Jean Willy Andre ; Coccetti, F. ; Colamaria, Fabio Filippo ; Colella, Domenico ; Conesa Balbastre, Gustavo ; Conesa Del Valle, Zaida ; Constantin, P. ; Contin, Giacomo ; Contreras Nuno, Jesus Guillermo ; Cormier, Thomas Michael ; Corrales Morales, Yasser ; Cortese, Pietro ; Cortes Maldonado, Ismael ; Cosentino, Mauro Rogerio ; Costa, Filippo ; Cotallo, M. E. ; Crescio, E. ; Crochet, Philippe ; Cruz Alaniz, E. ; Cuautle Flores, Eleazar ; Cunqueiro Mendez, Leticia ; Dainese, Andrea ; Dalsgaard, Hans Hjersing ; Danu, Andrea ; Das, K. ; Das, Indranil ; Das, Debasish ; Dash, Ajay Kumar ; Dash, Sadhana ; De, Sudipan ; De Barros, G. O.V. ; De Caro, Annalisa ; De Cataldo, Giacinto ; Cuveland, Jan de ; De Falco, Alessandro ; De Gruttola, Daniele ; Delagrange, H. ; Del Castillo Sanchez, E. ; Deloff, Andrzej ; Demanov, V. ; De Marco, Nora ; Denes, Ervin Sandor ; De Pasquale, Salvatore ; Deppman, A. ; Erasmo, G. D. ; De Rooij, R. ; Diaz Corchero, Miguel Angel ; Di Bari, Domenico ; Dietel, Thomas ; Di Giglio, C. ; Di Liberto, S. ; Di Mauro, Antonio ; Di Nezza, Pasquale ; Divià, Roberto ; Djuvsland, Øystein ; Dobrin, Alexandru Florin ; Dobrowolski, Tadeusz Antoni ; Dominguez, I. ; Donigus, Benjamin ; Dordic, Olja ; Driga, O. ; Dubey, Anand Kumar ; Ducroux, Laurent ; Dupieux, Pascal ; Dutta Majumdar, A. K. ; Dutta Majumdar, M. R. ; Elia, Domenico ; Emschermann, D. ; Engel, Heiko ; Erdal, H. A. ; Espagnon, Bruno ; Estienne, Magali Danielle ; Esumi, ShinIchi ; Evans, David ; Eyyubova, Gyulnara ; Fabris, Daniela ; Faivre, Julien ; Falchieri, D. ; Fantoni, Alessandra ; Fasel, Markus ; Fearick, R. ; Fedunov, A. ; Fehlker, D. ; Feldkamp, Linus ; Felea, Daniel ; Fenton-Olsen, B. ; Feofilov, Grigori A. ; Fernández Téllez, Arturo ; Ferretti, Alessandro ; Ferretti, R. ; Figiel, Jan ; Figueredo, M. A.S. ; Filchagin, Sergey ; Finogeev, Dmitry ; Fionda, Fiorella Maria Celeste ; Fiore, Enrichetta Maria ; Floris, Michele ; Foertsch, Siegfried Valentin ; Foka, Panagiota ; Fokin, Sergey ; Fragiacomo, Enrico ; Fragkiadakis, M. ; Frankenfeld, Ulrich ; Fuchs, Ulrich ; Furget, Christophe ; Fusco Girard, Mario ; Gaardhoje, J. J. ; Gagliardi, Martino ; Gago, A. ; Gallio, Mauro ; Gangadharan, Dhevan Raja ; Ganoti, Paraskevi ; Garabatos, Chilo ; Garcia-Solis, Edmundo Javier ; Garishvili, I. ; Gerhard, J. ; Germain, Marie ; Geuna, C. ; Gheata, Mihaela ; Gheata, Andrei George ; Ghidini, B. ; Ghosh, Premomoy ; Gianotti, Paola ; Girard, M. R. ; Giubellino, Paolo ; Gładysz-Dziaduś, Ewa ; Glässel, Peter ; Gomez, R. ; Gonzalez Ferreiro, Elena ; González Trueba, Laura Helena ; González Zamora, Pedro ; Gorbunov, Sergey ; Goswami, A. ; Gotovac, Sven ; Grabski, Varlen ; Graczykowski, Łukasz Kamil ; Grajcarek, R. ; Grelli, Alessandro ; Grigoraș, Costin ; Grigoras, Alina Gabriela ; Grigoriev, Vladislav A. ; Grigoryan, Smbat ; Grigoryan, Ara ; Grinyov, Boris V. ; Grion, Nevio ; Gros, P. ; Große-Oetringhaus, Jan Fiete ; Grossiord, J. Y. ; Grosso, Raffaele ; Guber, Fedor ; Guernane, Rachid ; Guerra Gutierrez, C. ; Guerzoni, Barbara ; Guilbaud, Maxime Rene Joseph ; Gulbrandsen, Kristjan Herlache ; Gunji, Taku ; Gupta, Ramni ; Gupta, Anik ; Gutbrod, H. ; Haaland, Øystein Senneset ; Hadjidakis, Cynthia Marie ; Haiduc, Maria ; Hamagaki, Hideki ; Hamar, Gergö ; Han, B. H. ; Hanratty, Luke David ; Hansen, Alexander ; Harmanova, Z. ; Harris, John W. ; Hartig, M. ; Hasegan, D. ; Hatzifotiadou, Despina ; Hayrapetyan, A. ; Heckel, Stefan Thomas ; Heide, Markus ; Helstrup, Håvard ; Herghelegiu, Andrei Ionut ; Herrera Corral, Gerardo Antonio ; Herrmann, Norbert ; Hetland, Kristin Fanebust ; Hicks, B. ; Hille, P. T. ; Hippolyte, Boris ; Horaguchi, T. ; Hori, Y. ; Hristov, Peter ; Hřivnačova, I. ; Huang, M. ; Humanic, Thomas J. ; Hwang, Dae Sung ; Ichou, R. ; Ilkaev, Radiy ; Ilkiv, Iryna ; Inaba, Motoi ; Incani, E. ; Innocenti, P. G. ; Innocenti, G. M. ; Ippolitov, Mikhail ; Irfan, M. ; Ivan, C. ; Ivanov, V. ; Ivanov, A. ; Ivanov, Marian ; Ivanytskyi, O. ; Jacholkowski, Adam Wlodzimierz ; Jacobs, Peter Martin ; Jancurova, L. ; Jang, Haeng Jin ; Jangal, S. ; Janik, R. ; Janik, Malgorzata Anna ; Jayarathna, P. H.S.Y. ; Jena, Satyajit ; Jha, D. M. ; Jiménez Bustamante, Raúl Tonatiuh ; Jirden, L. ; Jones, Peter Graham ; Jung, H. ; Jusko, Anton ; Kaidalov, A. B. ; Kakoyan, V. ; Kalcher, S. ; Kaliňak, Peter ; Kalisky, M. ; Kalliokoski, T. ; Kalweit, Alexander Philipp ; Kanaki, K. ; Kang, Ju Hwan ; Kaplin, Vladimir ; Karasu Uysal, Ayben ; Karavichev, Oleg V. ; Karavicheva, Tatiana L. ; Karpechev, Evgeny ; Kazantsev, Andrey ; Kebschull, Udo ; Keidel, Ralf ; Khan, M. M. ; Khan, Shuaib Ahmad ; Khanzadeev, Alexei ; Kharlov, Yury ; Kileng, Bjarte ; Kim, J. S. ; Kim, D. W. ; Kim, S. H. ; Kim, J. H. ; Kim, M. ; Kim, D. J. ; Kim, B. ; Kim, T. ; Kim, S. ; Kirsch, Stefan ; Kisel, Ivan ; Kiselev, Sergej N. ; Kisiel, Adam Ryszard ; Klay, Jennifer Lynn ; Klein, Jochen ; Klein-Bösing, Christian ; Kliemant, Michael ; Kluge, Alexander ; Knichel, Michael Linus ; Knospe, Anders Garritt ; Koch, K. ; Köhler, Markus Konrad ; Kolojvari, Anatoly ; Kondratiev, Valery P. ; Kondratyeva, Natalia ; Konevskikh, Artem ; Korneev, A. ; Kour, R. ; Kowalski, Marek ; Kox, Serge ; Koyithatta Meethaleveedu, Greeshma ; Kral, Jiří ; Králik, Ivan ; Kramer, F. ; Kraus, Ingrid ; Krawutschke, T. ; Křelina, Michal ; Kretz, Matthias ; Krivda, Marian ; Krizek, Filip ; Krus, M. ; Kryshen, Evgeny ; Krzewicki, Mikolaj ; Kucheriaev, Yury ; Kuhn, Christian Claude ; Kuijer, Paulus Gerardus ; Kurashvili, Podist ; Kurepin, Alexander ; Kurepin, Alexey B. ; Kuryakin, Alexey ; Kushpil, V. ; Kushpil, Svetlana ; Kvaerno, H. ; Kweon, Min Jung ; Kwon, Youngil ; Ladron de Guevara, Pedro ; Lakomov, Igor ; Langoy, Rune ; La Pointe, Sarah Louise ; Lara Martinez, Camilo Ernesto ; Lardeux, Antoine Xavier ; La Rocca, Paola ; Lazzeroni, C. ; Lea, Ramona ; Le Bornec, Y. ; Lechman, M. ; Lee, S. C. ; Lee, K. S. ; Lefevre, F. ; Lehnert, Jörg ; Leistam, L. ; Lenhardt, M. ; Lenti, Vito ; Leon, H. ; Leon Monzon, Ildefonso ; Leon Vargas, H. ; Lévai, Péter ; Lien, Jørgen André ; Lietava, Roman ; Lindal, Svein ; Lindenstruth, Volker ; Lippmann, Christian ; Lisa, Michael A. ; Liu, L. ; Lønne, Per-Ivar ; Loggins, Vera Renee ; Loginov, Vitaly ; Lohn, S. ; Lohner, D. ; Loizides, Constantinos ; Loo, K. K. ; Lopez, Xavier Bernard ; López Torres, Ernesto ; Lovhoiden, G. ; Lu, X. G. ; Lüttig, Philipp ; Lunardon, Marcello ; Luo, J. ; Luparello, Grazia ; Luquin, L. ; Luzzi, C. ; Ma, R. ; Ma, K. ; Madagodahettige-Don, D. M. ; Maevskaya, Alla ; Mager, Magnus ; Mahapatra, D. P. ; Maire, Antonin ; Malaev, Mikhail ; Maldonado Cervantes, Ivonne Alicia ; Malinina, Liudmila ; Mal’Kevich, Dmitry ; Malzacher, Peter ; Mamonov, Alexander ; Manceau, Loic Henri Antoine ; Mangotra, L. ; Manko, Vladislav ; Manso, Franck ; Manzari, Vito ; Mao, Yaxian ; Marchisone, Massimiliano ; Mareš, Jiří ; Margagliotti, Giacomo Vito ; Margotti, Anselmo ; Marin, Ana ; Marin Tobon, C. A. ; Markert, Christina ; Martashvili, Irakli ; Martinengo, Paolo ; Martínez Hernández, Mario Iván ; Martinez Davalos, A. ; Martínez Garcia, Ginés ; Martynov, Yevgen ; Mas, Alexis Jean-Michel ; Masciocchi, Silvia ; Masera, Massimo ; Masoni, Alberto ; Massacrier, Laure Marie ; Mastromarco, Mario ; Mastroserio, Annalisa ; Matthews, Z. L. ; Matyja, Adam Tomasz ; Mayani, D. ; Mayer, Christoph ; Mazer, Joel Anthony ; Mazzoni, Alessandra Maria ; Meddi, Franco ; Menchaca-Rocha, Arturo Alejandro ; Mercado Pérez, Jorge ; Meres, Michal ; Miake, Yasuo ; Milano, Leonardo ; Milošević, Jovan ; Mischke, André ; Mishra, Aditya Nath ; Miśkowiec, Dariusz Czesław ; Mitu, C. ; Mlynarz, J. ; Mohanty, A. K. ; Mohanty, Bedangadas ; Molnar, Levente ; Montaño Zetina, Luis Manuel ; Monteno, M. ; Montes Prado, Esther ; Moon, T. ; Morando, Maurizio ; Godoy, Denise Aparecida Moreira de ; Moretto, Sandra ; Morsch, Andreas ; Muccifora, Valeria ; Mudnic, Eugen ; Muhuri, Sanjib ; Mukherjee, Maitreyee ; Muller, H. ; Munhoz, Marcelo Gameiro ; Musa, Luciano ; Musso, A. ; Nandi, Basanta Kumar ; Nania, Rosario ; Nappi, Eugenio ; Nattrass, Christine ; Naumov, N. P. ; Navin, S. ; Nayak, Tapan Kumar ; Nazarenko, Sergey ; Nazarov, G. ; Nedosekin, Alexander ; Nicassio, Maria ; Nielsen, Borge Svane ; Niida, Takafumi ; Nikolaev, Sergey ; Nikolic, V. ; Nikulin, Vladimir ; Nikulin, Sergey ; Nilsen, B. S. ; Nilsson, M. S. ; Noferini, Francesco ; Nomokonov, Petr V. ; Nooren, Gerardus ; Novitzky, Norbert ; Nyanin, Alexander ; Nyatha, A. ; Nygaard, C. ; Nystrand, Joakim Ingemar ; Ochirov, A. ; Oeschler, Helmut ; Oh, S. ; Oh, Sun Kun ; Oleniacz, Janusz ; Oppedisano, Chiara ; Ortiz Velasquez, Antonio ; Ortona, G. ; Oskarsson, Anders Nils Erik ; Ostrowski, P. ; Otwinowski, Jacek Tomasz ; Oyama, Ken ; Ozawa, K. ; Pachmayer, Yvonne C. ; Pachr, Miloš ; Padilla, F. ; Pagano, Paola ; Paić, Guy ; Painke, F. ; Pajares Vales, Carlos ; Pal, Susanta Kumar ; Pal, S. ; Palaha, A. ; Palmeri, A. ; Papikyan, Vardanush ; Pappalardo, Giuseppe Salvatore ; Park, WooJin ; Passfeld, Annika ; Pastirčak, B. ; Patalakha, D. I. ; Paticchio, Vincenzo ; Pavlinov, A. ; Pawlak, Tomasz Jan ; Peitzmann, Thomas ; Pereira da Costa, Hugo Denis Antonio ; De Oliveira Filho, E. Pereira ; Peresunko, Dmitry Yurevich ; Pérez Lara, Carlos Eugenio ; Pérez Lezama, Edgar ; Perini, D. ; Perrino, D. ; Peryt, Wiktor Stanislaw ; Pesci, A. ; Peskov, Vladimir ; Pestov, Yury N. ; Petráček, Vojtech ; Petran, M. ; Petris, M. ; Petrov, P. ; Petrovici, Mihai A. ; Petta, Catia ; Piano, Stefano ; Piccotti, A. ; Pikna, Miroslav ; Pillot, Philippe ; Pinazza, Ombretta ; Pinsky, Lawrence ; Pitz, N. ; Piyarathna, Danthasinghe B. ; Płoskoń, Mateusz ; Pluta, Jan Marian ; Pocheptsov, T. ; Pochybova, Sona ; Podesta Lerma, P. L.M. ; Poghosyan, Martin G. ; Polak, K. ; Polichtchouk, Boris ; Pop, Amalia ; Porteboeuf-Houssais, Sarah Julie ; Pospišil, V. ; Potukuchi, B. ; Prasad, Sidharth Kumar ; Preghenella, Roberto ; Prino, Francesco ; Pruneau, Claude A. ; Pshenichnov, Igor A. ; Puchagin, S. ; Puddu, Giovanna ; Pujol Teixido, J. ; Pulvirenti, A. ; Punin, Valery ; Putiš, M. ; Putschke, Jörn H. ; Quercigh, E. ; Qvigstad, Henrik ; Rachevski, Alexandre ; Rademakers, A. ; Radomski, S. ; Raiha, T. S. ; Rak, Jan ; Rakotozafindrabe, Andry Malala ; Ramello, Luciano ; Ramirez Reyes, A. ; Raniwala, Rashmi ; Raniwala, Sudhir ; Räsänen, Sami Sakari ; Rascanu, Bogdan Theodor ; Rathee, Deepika ; Read, Kenneth Francis ; Real, Jean-Sébastien ; Redlich, Krzysztof ; Reichelt, Patrick ; Reicher, Martijn ; Renfordt, Rainer Arno Ernst ; Reolon, Anna Rita ; Reshetin, Andrey ; Rettig, Felix Vincenz ; Revol, J. P. ; Reygers, Klaus ; Riccati, L. ; Ricci, Renato Angelo ; Richert, Tuva Ora Herenui ; Richter, Matthias ; Riedler, Petra ; Riegler, Werner ; Riggi, Francesco ; Rabacal, B. Rodrigues Fernandes ; Cahuantzi, M. Rodriguez ; Manso, A. Rodriguez ; Røed, Ketil ; Rohr, David ; Röhrich, Dieter ; Romita, Rosa ; Ronchetti, Federico ; Rosnet, Philippe ; Rossegger, S. ; Rossi, Andrea ; Roukoutakis, Filimon ; Roy, Pradip Kumar ; Roy, Christelle Sophie ; Rubio Montero, Antonio Juan ; Rui, Rinaldo ; Ryabinkin, Evgeny ; Rybicki, Andrzej ; Sadovskiy, Sergey ; Šafařík, Karel ; Sahoo, Raghunath ; Sahu, Pradip Kumar ; Saini, Jogender ; Sakaguchi, H. ; Sakai, Shingo ; Sakata, D. ; Salgado, Carlos A. ; Salzwedel, Jai ; Sambyal, Sanjeev Singh ; Samsonov, Vladimir ; Sanchez Castro, Xitzel ; Šándor, Ladislav ; Sandoval, Andres ; Sano, S. ; Sano, Masato ; Santo, R. ; Santoro, R. ; Sarkamo, J. ; Scapparone, Eugenio ; Scarlassara, Fernando ; Scharenberg, Rolf Paul ; Schiaua, Claudiu Cornel ; Schicker, Rainer ; Schmidt, Christian Joachim ; Schmidt, Hans Rudolf ; Schreiner, S. ; Schuchmann, Simone ; Schukraft, Jürgen ; Schutz, Yves Roland ; Schwarz, Kilian ; Schweda, Kai ; Scioli, Gilda ; Scomparin, Enrico ; Scott, Rebecca Michelle ; Scott, P. A. ; Segato, G. ; Selyuzhenkov, Ilya ; Senyukov, Serhiy ; Seo, Jeewon ; Serci, S. ; Serradilla, Eulogio ; Sevcenco, Adrian ; Sgura, I. ; Shabetai, Alexandre ; Shabratova, G. ; Shahoyan, Ruben ; Sharma, Natasha ; Sharma, S. ; Shigaki, Kenta ; Shimomura, Maya ; Shtejer, Katherin ; Sibiriak, Yury ; Siciliano, M. ; Sicking, E. ; Siddhanta, Sabyasachi ; Siemiarczuk, Teodor ; Silvermyr, David Olle Rickard ; Silvestre, Catherine Micaela ; Simonetti, Giuseppe ; Singaraju, Rama Narayana ; Singh, R. ; Singha, Subhash ; Sinha, Bikash ; Sinha, Tinku ; Sitar, Branislav ; Sitta, Mario ; Skaali, Toralf Bernhard ; Skjerdal, K. ; Smakal, R. ; Smirnov, N. ; Snellings, Raimond ; Sogaard, C. ; Soltz, Ron ; Son, H. ; Song, M. ; Song, J. ; Soos, C. ; Soramel, Francesca ; Sputowska, Iwona Anna ; Spyropoulou-Stassinaki, Martha ; Srivastava, Brijesh Kumar ; Stachel, Johanna ; Stan, Ionel ; Stan, Ionel ; Stefanek, Grzegorz ; Steinbeck, T. ; Steinpreis, M. ; Stenlund, Evert Anders ; Steyn, Gideon Francois ; Stiller, Johannes Hendrik ; Stocco, Diego ; Stolpovskiy, M. ; Strabykin, K. ; Strmen, Peter ; Suaide, A. A.P. ; Subieta Vasquez, Martin Alfonso ; Sugitate, Toru ; Suire, Christophe Pierre ; Sukhorukov, M. ; Sultanov, Rishat ; Šumbera, Michal ; Šuša, Tatjana ; De Toledo, A. Szanto ; Szarka, Imrich ; Szostak, A. ; Tagridis, C. ; Takahashi, Jun ; Tapia Takaki, Jesus Daniel ; Tauro, Arturo ; Tejeda Muñoz, Guillermo ; Telesca, Adriana ; Terrevoli, Cristina ; Thäder, Jochen ; Thomas, Deepa ; Tieulent, Raphael Noel ; Timmins, Anthony Robert ; Tlusty, David ; Toia, Alberica ; Torii, H. ; Toscano, L. ; Truesdale, David Christopher ; Trzaska, Wladyslaw Henryk ; Tsuji, Tomoya ; Tumkin, Alexandr ; Turrisi, Rosario ; Tveter, Trine Spedstad ; Ulery, Jason Glyndwr ; Ullaland, Kjetil ; Ulrich, Jiri ; Uras, Antonio ; Urban, J. ; Urciuoli, G. M. ; Usai, Gianluca ; Vajzer, Michal ; Vala, Martin ; Valencia Palomo, Lizardo ; Vallero, Sara ; Kolk, Naomi van der ; Vyvre, Pierre vande ; Leeuwen, Marco van ; Vannucci, L. ; Vargas Treviño, Maria Aurora Diozcora ; Varma, Raghava ; Vasileiou, Maria ; Vasiliev, Andrey ; Vechernin, Vladimir ; Veldhoen, Misha ; Venaruzzo, Massimo ; Vercellin, Ermanno ; Vergara, S. ; Vernet, Renaud ; Verweij, Marta ; Vicković, Linda ; Viesti, Giuseppe ; Vikhlyantsev, O. ; Vilakazi, Zabulon ; Villalobos Baillie, Orlando ; Vinogradov, Alexander A. ; Vinogradov, Leonid ; Vinogradov, Yury I. ; Virgili, Tiziano ; Viyogi, Yogendra P. ; Vodopyanov, Alexander ; Voloshin, Sergei ; Voloshin, Kirill ; Volpe, Giacomo ; Haller, Barthélémy von ; Vranić, Danilo ; Ovrebekk, G. ; Vrlakova, Janka ; Vulpescu, Bogdan ; Vyushin, Alexey ; Wagner, Boris ; Wagner, V. ; Wan, R. ; Wang, Y. ; Wang, D. ; Wang, Y. ; Wang, M. ; Watanabe, K. ; Wessels, Johannes P. ; Westerhoff, Uwe ; Wiechula, Jens ; Wikne, Jon ; Wilde, Martin ; Wilk, Grzegorz Andrzej ; Wilk, A. ; Williams, M. 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The ALICE Zero Degree Calorimeter system (ZDC) is composed of two identical sets of calorimeters, placed at opposite sides with respect to the interaction point, 114 meters away from it, complemented by two small forward electromagnetic calorimeters (ZEM). Each set of detectors consists of a neutron (ZN) and a proton (ZP) ZDC. They are placed at zero degrees with respect to the LHC axis and allow to detect particles emitted close to beam direction, in particular neutrons and protons emerging from hadronic heavy-ion collisions (spectator nucleons) and those emitted from electromagnetic processes. For neutrons emitted by these two processes, the ZN calorimeters have nearly 100% acceptance.
During the √sNN = 2.76 TeV Pb-Pb data-taking, the ALICE Collaboration studied forward neutron emission with a dedicated trigger, requiring a minimum energy deposition in at least one of the two ZN. By exploiting also the information of the two ZEM calorimeters it has been possible to separate the contributions of electromagnetic and hadronic processes and to study single neutron vs. multiple neutron emission.
The measured cross sections of single and mutual electromagnetic dissociation of Pb nuclei at √sNN = 2.76 TeV, with neutron emission, are σsingle EMD = 187:4 ± 0.2 (stat.)−11.2+13.2 (syst.) b and σmutual EMD = 5.7 ± 0.1 (stat.) ±0.4 (syst.) b, respectively [1]. This is the first measurement of electromagnetic dissociation of 208Pb nuclei at the LHC energies, allowing a test of electromagnetic dissociation theory in a new energy regime. The experimental results are compared to the predictions from a relativistic electromagnetic dissociation model.
Casanovas Hoste, Adrià ; Domingo-Pardo, César ; Guerrero Sánchez, Carlos ; Lerendegui-Marco, Jorge ; Calviño Tavares, Francisco ; Tarifeño-Saldivia, Ariel ; Dressler, Rugard ; Heinitz, Stephan ; Kivel, Nikolay ; Quesada Molina, José Manuel ; Schumann, Dorothea ; Aberle, Oliver ; Alcayne, Victor ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Bacak, Michael ; Barbagallo, Massimo ; Bečvář, František ; Bellia, Giorgio ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Busso, Maurizio ; Caamaño, Manuel ; Caballero Ontanaya, Luis ; Calviani, Marco ; Cano-Ott, Daniel ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Diakaki, Maria ; Dietz, Mirco ; Dupont, Emmeric ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Ferreira, Pedro G. ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Gawlik, Aleksandra ; Gilardoni, Simone ; Glodariu, Tudor ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Gunsing, Frank ; Heyse, Jan ; Jenkins, David ; Käppeler, Franz ; Kadi, Yacine ; Katabuchi, Tatsuya ; Kimura, Atsushi ; Kokkoris, Michael ; Kopatch, Yuri N. ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Ladarescu, Ion ; Lederer-Woods, Claudia ; Lo Meo, Sergio ; Lonsdale, Sarah Jane ; Macina, Daniela ; Martı́nez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Porras Sánchez, José Ignacio ; Praena, Javier ; Radeck, Désirée ; Ramos Doval, Diego ; Rauscher, Thomas ; Reifarth, René ; Rochman, Dimitri ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Simone, Saverio ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Talip, T. ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Ulrich, Jiri ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar ; Köster, Ulrich
The neutron capture cross section of some unstable nuclei is especially relevant for s-process nucleosynthesis studies. This magnitude is crucial to determine the local abundance pattern, which can yield valuable information of the s-process stellar environment. In this work we describe the neutron capture (n,γ) measurement on two of these nuclei of interest, 204Tl and 171Tm, from target production to the final measurement, performed successfully at the n_TOF facility at CERN in 2014 and 2015. Preliminary results on the ongoing experimental data analysis will also be shown. These results include the first ever experimental observation of capture resonances for these two nuclei.
Babiano Suarez, Victor ; Lerendegui-Marco, Jorge ; Balibrea Correa, Javier ; Caballero Ontanaya, Luis ; Calvo, David ; Ladarescu, Ion ; Domingo-Pardo, César ; Calviño Tavares, Francisco ; Casanovas Hoste, Adrià ; Tarifeño-Saldivia, Ariel ; Alcayne, Victor ; Guerrero Sánchez, Carlos ; Millán Callado, María de los Ángeles ; Rodrı́guez-González, María Teresa ; Barbagallo, Massimo ; Aberle, Oliver ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Bacak, Michael ; Bennett, Samuel ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Busso, Maurizio ; Caamaño, Manuel ; Calviani, Marco ; Cano-Ott, Daniel ; Cerutti, Francesco ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Davies, Paul John ; Diakaki, Maria ; Dietz, Mirco ; Dressler, Rugard ; Ducasse, Quentin ; Dupont, Emmeric ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Garg, Ruchi ; Gawlik, Aleksandra ; Gilardoni, Simone ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Gunsing, Frank ; Harada, Hideo ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Junghans, Arnd Rudolf ; Käppeler, Franz ; Kadi, Yacine ; Kimura, Atsushi ; Knapova, Ingrid ; Kokkoris, Michael ; Kopatch, Yuri N. ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Lederer-Woods, Claudia ; Leeb, Helmut ; Lonsdale, Sarah Jane ; Macina, Daniela ; Manna, Alice ; Martinez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Moreno-Soto, Javier ; Musumarra, Agatino ; Negret, Alexandru ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Petrone, Cristina ; Pirovano, Elisa ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Ramos Doval, Diego ; Rauscher, Thomas ; Reifarth, René ; Rochman, Dimitri ; Rubbia, Carlo ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Sekhar, Adhitya ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Sprung, Peter ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tassan-Got, Laurent ; Thomas, Th. ; Torres-Sánchez, Pablo ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vescovi, Diego ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
i-TED is an innovative detection system which exploits Compton imaging techniques to achieve a superior signal-to-background ratio in (n,γ) cross-section measurements using time-of-flight technique. This work presents the first experimental validation of the i-TED apparatus for high-resolution time-of-flight experiments and demonstrates for the first time the concept proposed for background rejection. To this aim both 197Au(n,γ) and 56Fe(n,γ) reactions were measured at CERN n\_TOF using an i-TED demonstrator based on only three position-sensitive detectors. Two \cds detectors were also used to benchmark the performance of i-TED. The i-TED prototype built for this study shows a factor of ∼3 higher detection sensitivity than state-of-the-art \cds detectors in the ∼10~keV neutron energy range of astrophysical interest. This paper explores also the perspectives of further enhancement in performance attainable with the final i-TED array consisting of twenty position-sensitive detectors and new analysis methodologies based on Machine-Learning techniques.
Babiano Suarez, Victor ; Balibrea Correa, Javier ; Caballero Ontanaya, Luis ; Domingo-Pardo, César ; Ladarescu, Ion ; Lerendegui-Marco, Jorge ; Taı́n Enríquez, José Luis ; Calviño Tavares, Francisco ; Casanovas Hoste, Adrià ; Tarifeño-Saldivia, Ariel ; Guerrero Sánchez, Carlos ; Aberle, Oliver ; Alcayne, Victor ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Bacak, Michael ; Barbagallo, Massimo ; Bennett, Samuel ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Busso, Maurizio ; Caamaño, Manuel ; Calviani, Marco ; Cano-Ott, Daniel ; Cerutti, Francesco ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Cristallo, Sergio ; Damone, Lucia Anna ; Davies, Paul John ; Diakaki, Maria ; Dietz, Mirco ; Dressler, Rugard ; Ducasse, Quentin ; Dupont, Emmeric ; Durán, Ignacio ; Eleme, Zinovia ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Garg, Ruchi ; Gawlik-Ramiega, Aleksandra ; Gilardoni, Simone ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Gunsing, Frank ; Harada, Hideo ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Junghans, Arnd Rudolf ; Käppeler, Franz ; Kadi, Yacine ; Kimura, Atsushi ; Knapová, Ingrid ; Kokkoris, Michael ; Kopatch, Yuri N. ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Lederer-Woods, Claudia ; Leeb, Helmut ; Lonsdale, Sarah Jane ; Macina, Daniela ; Manna, Alice ; Martı́nez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Michalopoulou, Veatriki ; Milazzo, Paolo Maria ; Mingrone, Federica ; Moreno-Soto, Javier ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Ogállar Ruiz, Francisco ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Piersanti, Luciano ; Petrone, Cristina ; Pirovano, Elisa ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Ramos Doval, Diego ; Rauscher, Thomas ; Reifarth, René ; Rochman, Dimitri ; Romanets, Y. ; Rubbia, Carlo ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Sekhar, Adhitya ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Sprung, Peter ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Tassan-Got, Laurent ; Thomas, Th. ; Torres-Sánchez, Pablo ; Tsinganis, Andrea ; Ulrich, Jiri ; Urlaß, Sebastian ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vescovi, Diego ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar