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Mingrone, Federica ; Massimi, Cristian ; Vannini, Gianni ; Altstadt, Sebastian ; Andrzejewski, Józef ; Audouin, Ludmila ; Barbagallo, Massimo ; Bécares, Vicente ; Bečvář, František ; Belloni, Fabio ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brugger, Markus ; Calviani, Marco ; Calviño Tavares, Francisco ; Cano-Ott, Daniel ; Carrapiço, Carlos ; Cerutti, Francesco ; Chiaveri, Enrico ; Chin, Mary ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Diakaki, Maria ; Domingo-Pardo, César ; Durán, Ignacio ; Dressler, Rugard ; Eleftheriadis, Christos ; Ferrari, Alfredo ; Fraval, Kevin ; Ganesan, Srinivasan ; García Ríos, Aczel Regino ; Giubrone, Giuseppe ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique ; Griesmayer, Erich ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Hernández Prieto, Álvaro ; Jenkins, David ; Jericha, Erwin ; Kadi, Yacine ; Käppeler, Franz ; Karadimos, Dimitri ; Kivel, Nikolay ; Koehler, Paul Edward ; Krtička, Milan ; Kroll, Jiří ; Lampoudis, Christos ; Langer, Christoph ; Leal Cidoncha, Esther ; Lederer, Claudia ; Leeb, Helmut ; Leong, Lou Sai ; Losito, Roberto ; Mallick, Amod Kishore ; Manousos, Athanasios ; Marganiec, Justyna ; Martínez, Trinitario ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Milazzo, Paolo Maria ; Mirea, Mihail ; Mondalaers, Willy ; Paradela Dobarro, Carlos ; Pavlik, Andreas ; Perkowski, Jarosław ; Plompen, Arjan J. M. ; Praena, Javier ; Quesada Molina, José Manuel ; Rauscher, Thomas ; Reifarth, René ; Riego Pérez, Albert ; Robles, Marisol S. ; Rubbia, Carlo ; Sabaté Gilarte, Marta ; Sarmento, Raul ; Saxena, Alok ; Schillebeeckx, Peter ; Schmidt, Sebastian ; Schumann, Dorothea ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarrío Vilas, Diego ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Valenta, Stanislav ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vermeulen, Mark J. ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Ware, Timothy ; Weigand, Mario ; Weiß, Christina ; Wright, Tobias ; Žugec, Petar
The radiative capture cross section of 238U is very important for the developing of new reactor technologies and the safety of existing ones. Here the preliminary results of the 238U(n,γ) cross section measurement performed at n_TOF with C6D6 scintillation detectors are presented, paying particular attention to data reduction and background subtraction.
Barbagallo, Massimo ; Colonna, Nicola ; Aberle, Oliver ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Bacak, Michael ; Balibrea Correa, Javier ; Barros, Susana C.C. ; Bečvář, František ; Beinrucker, Clemens ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brugger, Markus ; Caamaño, Manuel ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Cardella, Roberto ; Casanovas Hoste, Adrià ; Castelluccio, Donato Maurizio ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Damone, Lucia Anna ; Diakaki, Maria ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Durán, Ignacio ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Ferreira, Pedro G. ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; García Ríos, Aczel Regino ; Gawlik, Aleksandra ; Glodariu, Tudor ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Goverdovski, Andrey ; Griesmayer, Erich ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Harada, Hideo ; Heftrich, Tanja ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Kadi, Yacine ; Katabuchi, Tatsuya ; Kavrigin, Pavel ; Ketlerov, Vladimir ; Khryachkov, Vitaly ; Kimura, Atsushi ; Kivel, Nikolay ; Kokkoris, Michael ; Krtička, Milan ; Leal Cidoncha, Esther ; Lederer, Claudia ; Leeb, Helmut ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Lonsdale, Sarah Jane ; Losito, Roberto ; Macina, Daniela ; Marganiec, Justyna ; Martı́nez, Trinitario ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Maugeri, Emilio Andrea ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Milazzo, Paolo Maria ; Mingrone, Federica ; Mirea, Mihail ; Montesano, Simone ; Musumarra, Agatino ; Nolte, Ralf ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Rajeev, K. ; Rauscher, Thomas ; Reifarth, René ; Riego Pérez, Albert ; Rout, Prakash Chandra ; Rubbia, Carlo ; Ryan, James ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schmidt, Stefan ; Schumann, Dorothea ; Sedyshev, Pavel V. ; Smith, Alastair Gavin ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Warren, Stephen J. ; Weigand, Mario ; Weiß, Christina ; Wolf, Clemens ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
The Cosmological Lithium Problem refers to the large discrepancy between the abundance of primordial 7Li predicted by the standard theory of Big Bang Nucleosynthesis and the value inferred from the so-called “Spite plateau” in halo stars. A possible explanation for this longstanding puzzle in Nuclear Astrophysics is related to the incorrect estimation of the destruction rate of 7Be, which is responsible for the production of 95% of primordial Lithium. While charged-particle induced reactions have mostly been ruled out, data on the 7Be(n,α) and 7Be(n,p) reactions are scarce or completely missing, so that a large uncertainty still affects the abundance of 7Li predicted by the standard theory of Big Bang Nucleosynthesis. Both reactions have been measured at the n_TOF facility at CERN, providing for the first time data in a wide neutron energy range.
Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy
(2020)
Amaducci, Simone ; Aberle, Oliver ; Andrzejewski, Józef ; Audouin, Laurent ; Bacak, Michael ; Balibrea Correa, Javier ; Barbagallo, Massimo ; Bečvář, František ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Caamaño, Manuel ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Cardella, Roberto ; Casanovas Hoste, Adrià ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Damone, Lucia Anna ; Diakaki, Maria ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Durán, Ignacio ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Ferreira, Pedro G. ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; García Ríos, Aczel Regino ; Gawlik, Aleksandra ; Gilardoni, Simone ; Glodariu, Tudor ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Griesmayer, Erich ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Harada, Hideo ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Kadi, Yacine ; Kalamara, Antigoni ; Kavrigin, Pavel ; Kimura, Atsushi ; Kivel, Nikolay ; Knapová, Ingrid ; Kokkoris, Michael ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Leal Cidoncha, Esther ; Lederer, Claudia ; Leeb, Helmut ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Lonsdale, Sarah Jane ; Macina, Daniela ; Manna, Alice ; Marganiec, Justyna ; Martı́nez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Radeck, Désirée ; Rauscher, Thomas ; Reifarth, René ; Rubbia, Carlo ; Ryan, James A. ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Sedyshev, Pavel V. ; Smith, Alastair Gavin ; Sosnin, Nikolay V. ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Warren, Stephen J. ; Weiß, Christina ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
An accurate measurement of the 235U(n,f) cross section from thermal to 170 keV of neutron energy has recently been performed at n_TOF facility at CERN using 6Li(n,t)4He and 10B(n,α)7Li as references. This measurement has been carried out in order to investigate a possible overestimation of the 235U fission cross section evaluation provided by most recent libraries between 10 and 30 keV. A custom experimental apparatus based on in-beam silicon detectors has been used, and a Monte Carlo simulation in GEANT4 has been employed to characterize the setup and calculate detectors efficiency. The results evidenced the presence of an overestimation in the interval between 9 and 18 keV and the new data may be used to decrease the uncertainty of 235U(n,f) cross section in the keV region.
Chen, Yong Hao ; Tassan-Got, Laurent ; Audouin, Laurent ; Le Naour, Claire ; Durán, Ignacio ; Casarejos Ruiz, Enrique ; Aberle, Oliver ; Andrzejewski, Józef ; Bécares, Vicente ; Bacak, Michael ; Balibrea Correa, Javier ; Barbagallo, Massimo ; Barros, Susana C.C. ; Bečvář, František ; Beinrucker, Clemens ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brugger, Markus ; Caamaño, Manuel ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Cardella, Roberto ; Casanovas Hoste, Adrià ; Castelluccio, Donato Maurizio ; Cerutti, Francesco ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Damone, Lucia Anna ; Diakaki, Maria ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Ferreira, Pedro G. ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; Gómez Hornillos, María Belén ; García Ríos, Aczel Regino ; Gawlik, Aleksandra ; Glodariu, Tudor ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Goverdovski, Andrey ; Griesmayer, Erich ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Harada, Hideo ; Heftrich, Tanja ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Kadi, Yacine ; Katabuchi, Tatsuya ; Kavrigin, Pavel ; Ketlerov, Vladimir ; Khryachkov, Vitaly ; Kimura, Atsushi ; Kivel, Nikolay ; Kokkoris, Michael ; Krtička, Milan ; Leal Cidoncha, Esther ; Lederer, Claudia ; Leeb, Helmut ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Lonsdale, Sarah Jane ; Losito, Roberto ; Macina, Daniela ; Marganiec, Justyna ; Martı́nez, Trinitario ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Maugeri, Emilio Andrea ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Milazzo, Paolo Maria ; Mingrone, Federica ; Mirea, Mihail ; Montesano, Simone ; Musumarra, Agatino ; Nolte, Ralf ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Rajeev, K. ; Rauscher, Thomas ; Reifarth, René ; Riego Pérez, Albert ; Robles Manzano, Maria Soledad ; Rout, Prakash Chandra ; Rubbia, Carlo ; Ryan, James A. ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schmidt, Stefan ; Schumann, Dorothea ; Sedyshev, Pavel V. ; Smith, Alastair Gavin ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeño-Saldivia, Ariel ; Tsinganis, Andrea ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Warren, Stephen J. ; Weigand, Mario ; Weiß, Christina ; Wolf, Clemens ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
The experimental area 2 (EAR-2) at CERNs neutron time-of-flight facility (n_TOF), which is operational since 2014, is designed and built as a short-distance complement to the experimental area 1 (EAR-1). The Parallel Plate Avalanche Counter (PPAC) monitor experiment was performed to characterize the beam pro↓le and the shape of the neutron 'ux at EAR-2. The prompt γ-flash which is used for calibrating the time-of-flight at EAR-1 is not seen by PPAC at EAR-2, shedding light on the physical origin of this γ-flash.
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.
Göbel, Kathrin ; Heil, Michael ; Bott, Lukas ; Brandenburg, Leonard ; Caesar, Christoph ; Deuter, Isabell ; Grein, Alexander ; Keliç-Heil, Aleksandra ; Körper, Daniel ; Löher, Bastian ; Reifarth, René ; Savran, Deniz ; Schulte, Hendrik ; Simon, Haik ; Törnqvist, Hans Toshihide ; Almusidi, Tahani ; Álvarez-Pol, Héctor ; Atkins, Liam ; Aumann, Thomas ; Bemmerer, Daniel ; Benlliure Anaya, Jose Fernando ; Boretzky, Konstanze ; Brückner, Benjamin ; Cabanelas Eiras, Pablo ; Casarejos Ruiz, Enrique ; Cederkäll, Joakim ; Chulkov, Leonid V. ; Cortina Gil, Dolores ; Danilov, Andrey ; Erbacher, Philipp ; Escribano Rodriguez, Sonia ; Fülöp, Zsolt ; Falduto, Ashton ; Fiebiger, Stefan ; Gašparić, Igor ; Garcia Borge, Maria José ; Gernhäuser, Roman ; Glorius, Jan ; Gonzales Caamaño, David ; Hartig, Anna-Lena ; Heftrich, Tanja ; Heggen, Henning ; Heine, Marcel ; Heinz, Andreas ; Hensel, Thomas ; Holl, Matthias ; Johansson, Håkan T. ; Jonson, Björn ; Kalantar-Nayestanaki, Nasser ; Kamenyero, Armel ; Khasawneh, Kafa al- ; Kiselev, Oleg A. ; Klenze, Philipp ; Kohls, Marvin ; Kröll, Thorsten ; Kresan, Dmytro ; Kurtulgil, Cem Deniz ; Kurz, Nikolaus ; Langer, Christoph ; Lehr, Christopher ; Litvinov, Yuri A. ; Lorenz, Enis ; Murillo Morales, Silvia ; Nácher González, Enrique ; Nilsson, Thomas ; Park, Joochun ; Paschalis, Stefanos ; Perea Martinez, Angel ; Petri, Marina ; Plag, Ralf ; Ponnath, Lukas ; Popočovski, Romana ; Reich, Markus ; Rhee, Han-Bum ; Rodriguez Sanchez, Jose Luis ; Rossi, Dominic M. ; Scheit, Heiko ; Schmidt, Konrad ; Slavkovská, Zuzana ; Starostin, Viktor ; Storck, Sonja ; Sürder, Christian ; Tanaka, Junki ; Tengblad, Olof ; Thomas, Benedikt ; Typel, Stefan ; Varga, László ; Volk, Klaus ; Volknandt, Meiko ; Wagner, Vadim ; Wamers, Felix ; Weigand, Mario ; Zanetti, Lorenzo
We measured the Coulomb dissociation of 16O into 4He and 12C at the R3B setup in a first campaign within FAIR Phase 0 at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The goal was to improve the accuracy of the experimental data for the 12C(α,γ)16O fusion reaction and to reach lower center-ofmass energies than measured so far.
The experiment required beam intensities of 109 16O ions per second at an energy of 500 MeV/nucleon. The rare case of Coulomb breakup into 12C and 4He posed another challenge: The magnetic rigidities of the particles are so close because of the same mass-to-charge-number ratio A/Z = 2 for 16O, 12C and 4He. Hence, radical changes of the R3B setup were necessary. All detectors had slits to allow the passage of the unreacted 16O ions, while 4He and 12C would hit the detectors' active areas depending on the scattering angle and their relative energies. We developed and built detectors based on organic scintillators to track and identify the reaction products with sufficient precision.
Destruction of the cosmic γ-ray emitter 26Al in massive stars: study of the key 26Al(n,p) reaction
(2021)
Lederer-Woods, Claudia ; Woods, Philip John ; Davinson, Thomas ; Kahl, David ; Lonsdale, Sarah Jane ; Aberle, Oliver ; Amaducci, Simone ; Andrzejewski, Józef ; Audouin, Laurent ; Bacak, Michael ; Balibrea Correa, Javier ; Barbagallo, Massimo ; Bečvář, František ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brown, Adam ; Caamaño, Manuel ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Cardella, Roberto ; 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 ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Durán, Ignacio ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Ferreira, Paulo ; Ferrer, Francisco Javier ; Finocchiaro, Paolo ; Furman, Valter ; Göbel, Kathrin ; García Ríos, Aczel Regino ; Gawlik, Aleksandra ; Gilardoni, Simone ; Glodariu, Tudor ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Griesmayer, Erich ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Harada, Hideo ; Heinitz, Stephan ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Kadi, Yacine ; Kalamara, Antigoni ; Kavrigin, Pavel ; Kimura, Atsushi ; Kivel, Nikolay ; Kokkoris, Michael ; Krtička, Milan ; Kurtulgil, Cem Deniz ; Leal Cidoncha, Esther ; Leeb, Helmut ; Lerendegui-Marco, Jorge ; Lo Meo, Sergio ; Macina, Daniela ; Manna, Alice ; Marganiec, Justyna ; Martínez, Trinitario ; Masi, Alessandro ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Maugeri, Emilio Andrea ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Milazzo, Paolo Maria ; Mingrone, Federica ; Musumarra, Agatino ; Negret, Alexandru ; Nolte, Ralf ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Radeck, Désirée ; Rauscher, Thomas ; Reifarth, René ; Rubbia, Carlo ; Ryan, James A. ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schumann, Dorothea ; Sedyshev, Pavel V. ; Smith, Alastair G. ; Sosnin, Nikolay V. ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Warren, Stuart ; Weß, Christina ; Wright, Tobias ; Žugec, Petar
The 26Al(n,p)26Mg reaction is the key reaction impacting on the abundances of the cosmic γ-ray emitter 26Al produced in massive stars and impacts on the potential pollution of the early solar system with 26Al by asymptotic giant branch stars. We performed a measurement of the 26Al(n,p)26Mg cross section at the high-flux beam line EAR-2 at the n_TOF facility (CERN). We report resonance strengths for eleven resonances, nine being measured for the first time, while there is only one previous measurement for the other two. Our resonance strengths are significantly lower than the only previous values available. Our cross-section data range to 150 keV neutron energy, which is sufficient for a reliable determination of astrophysical reactivities up to 0.5 GK stellar temperature.
Žugec, Petar ; Barbagallo, Massimo ; Colonna, Nicola ; Bosnar, Damir ; Altstadt, Sebastian ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Bečvář, František ; Belloni, Fabio ; Berthoumieux, Eric ; Billowes, Jonathan ; Boccone, Vittorio ; Brugger, Markus ; Calviani, Marco ; Calviño Tavares, Francisco ; Cano-Ott, Daniel ; Carrapiço, Carlos ; Cerutti, Francesco ; Chiaveri, Enrico ; Chin, Michael ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Diakaki, Maria ; Domingo-Pardo, César ; Dressler, Rugard ; Durán, Ignacio ; Dzysiuk, Nataliia ; Eleftheriadis, Christos ; Ferrari, Alfredo ; Fraval, Kevin ; Ganesan, Srinivasan ; García Ríos, Aczel Regino ; Giubrone, Giuseppe ; Gómez Hornillos, María Belén ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Griesmayer, Erich ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Gurusamy, Perumal ; Heinitz, Stephan ; Jenkins, David ; Jericha, Erwin ; Kadi, Yacine ; Käppeler, Franz ; Karadimos, Dimitri ; Kivel, Nikolay ; Koehler, Paul ; Kokkoris, Michael ; Krtička, Milan ; Kroll, Jiří ; Langer, Christoph ; Lederer, Claudia ; Leeb, Helmut ; Leong, Lou Sai ; Lo Meo, Sergio ; Losito, Roberto ; Manousos, Athanasios ; Marganiec, Justyna ; Martínez, Trinitario ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Meaze, AKM Moinul Haque ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Milazzo, Paolo Maria ; Mingrone, Federica ; Mirea, Mihail ; Mondalaers, Willy ; Paradela Dobarro, Carlos ; Pavlik, Andreas ; Perkowski, Jarosław ; Pignatari, Marco ; Plompen, Arjan J. M. ; Praena, Javier ; Quesada Molina, José Manuel ; Rauscher, Thomas ; Reifarth, René ; Riegov, A. ; Roman, Faustin Laurenţiu ; Rubbia, Carlo ; Sarmento, Raul ; Saxena, Alok ; Schillebeeckx, Peter ; Schmidt, Stefan ; Schumann, Dorothea ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarrío Vilas, Diego ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Versaci, Roberto ; Vermeulen, Mark J. ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Ware, Timothy ; Weigand, Mario ; Weiß, Christina ; Wright, Tobias
The neutron capture cross section of 58Ni was measured at the neutron time of flight facility n_TOF at CERN, from 27 meV to 400 keV neutron energy. Special care has been taken to identify all the possible sources of background, with the so-called neutron background obtained for the first time using high-precision GEANT4 simulations. The energy range up to 122 keV was treated as the resolved resonance region, where 51 resonances were identified and analyzed by a multilevel R-matrix code SAMMY. Above 122 keV the code SESH was used in analyzing the unresolved resonance region of the capture yield. Maxwellian averaged cross sections were calculated in the temperature range of kT = 5 – 100 keV, and their astrophysical implications were investigated.
Cosentino, Luigi ; Musumarra, Agatino ; Barbagallo, Massimo ; Pappalardo, Alessandro ; Colonna, Nicola ; Damone, Lucia Anna ; Piscopo, Massimo ; Finocchiaro, Paolo ; Maugeri, Emilio Andrea ; Heinitz, Stephan ; Schumann, Dorothea ; Dressler, Rugard ; Kivel, Nikolay ; Aberle, Oliver ; Andrzejewski, Józef ; Audouin, Laurent ; Ayranov, Marin ; Bacak, Michael ; Barros, Susana C.C. ; Balibrea Correa, Javier ; Bécares, Vicente ; Bečvář, František ; Beinrucker, Clemens ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brugger, Markus ; Caamaño, Manuel ; Calviani, Marco ; Calviño Tavares, Francisco ; Cano-Ott, Daniel ; Cardella, Roberto ; Casanovas Hoste, Adrià ; Castelluccio, Donato Maurizio ; Cerutti, Francesco ; Chen, Yonghao ; Chiaveri, Enrico ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Diakaki, Maria ; Domingo-Pardo, César ; Dupont, Emmeric ; Durán, Ignacio ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Ferreira, Pedro G. ; Furman, Valter ; Ganesan, Srinivasan ; García Ríos, Aczel Regino ; Gawlik, Aleksandra ; Gheorghe, Ioana ; Glodariu, Tudor ; Göbel, Kathrin ; Gonc̗alves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Griesmayer, Erich ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Harada, Hideo ; Heftrich, Tanja ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Katabuchi, Tatsuya ; Kavrigin, Pavel ; Kimura, Atsushi ; Kokkoris, Michael ; Krtička, Milan ; Leal Cidoncha, Esther ; Lerendegui, Jorge ; Lederer, Claudia ; Leeb, Helmut ; Lo Meo, Sergio ; Lonsdale, Sarah Jane ; Losito, Roberto ; Macina, Daniela ; Marganiec, Justyna ; Martínez, Trinitario ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Mazzone, Annamaria ; Mendoza Cembranos, Emilio ; Mengoni, Alberto ; Milazzo, Paolo Maria ; Mingrone, Federica ; Mirea, Mihail ; Montesano, Simone ; Nolte, Ralf ; Oprea, Andreea ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Praena, Javier ; Quesada Molina, José Manuel ; Kumar, Rajeev ; Rauscher, Thomas ; Reifarth, René ; Riego Pérez, Albert ; Rout, Prakash Chandra ; Rubbia, Carlo ; Ryan, James A. ; Sabate-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schmidt, Stefan ; Sedyshev, Pavel V. ; Smith, Alastair Gavin ; Stamatopoulos, Athanasios ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Valenta, Stanislav ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Vollaire, Joachim ; Wallner, Anton ; Warren, Stephen J. ; Weigand, Mario ; Weiß, Christina ; Wolf, Clemens ; Woods, Philip John ; Wright, Tobias ; Žugec, Petar
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