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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.
Lederer-Woods, Claudia ; Battino, Umberto ; Ferreira, Pedro G. ; Gawlik, Aleksandra ; Guerrero Sánchez, Carlos ; Gunsing, Frank ; Heinitz, Stephan ; Lerendegui-Marco, Jorge ; Mengoni, Alberto ; Reifarth, René ; Tattersall, Ashley ; Valenta, Stanislav ; Weiß, Christina ; Aberle, Oliver ; Andrzejewski, Józef ; Audouin, Laurent ; Bécares, Vicente ; Bacak, Michael ; Balibrea Correa, Javier ; Barbagallo, Massimo ; Barros, Susana C.C. ; Bečvář, František ; Beinrucker, Clemens ; Belloni, Fabio ; Berthoumieux, Eric ; Billowes, Jonathan ; Bosnar, Damir ; Brugger, Markus ; Caamaño, Manuel ; Calviño Tavares, Francisco ; Calviani, Marco ; Cano-Ott, Daniel ; Cerutti, Francesco ; Chiaveri, Enrico ; Colonna, Nicola ; Cortés Rossell, Guillem Pere ; Cortés-Giraldo, Miguel Antonio ; Cosentino, Luigi ; Damone, Lucia Anna ; Deo, Kapil ; Diakaki, Maria ; Dietz, Mirco ; Domingo-Pardo, César ; Dressler, Rugard ; Dupont, Emmeric ; Durán, Ignacio ; Fernández Domínguez, Beatriz ; Ferrari, Alfredo ; Finocchiaro, Paolo ; Frost, Robert J. W. ; Furman, Valter ; Göbel, Kathrin ; García Ríos, Aczel Regino ; Gheorghe, Ioana ; Glodariu, Tudor ; Gonçalves, Isabel Maria Ferro ; González Romero, Enrique Miguel ; Goverdovski, Andrey ; Griesmayer, Erich ; Harada, Hideo ; Heftrich, Tanja ; Hernández Prieto, Álvaro ; Heyse, Jan ; Jenkins, David ; Jericha, Erwin ; Käppeler, Franz ; Kadi, Yacine ; Katabuchi, Tatsuya ; Kavrigin, Pavel ; Ketlerov, Vladimir ; Khryachkov, Vitaly ; Kimura, Akinori ; Kivel, Nikolay ; Knapová, Ingrid ; Kokkoris, Michael ; Krtička, Milan ; Leal Cidoncha, Esther ; Leeb, Helmut ; Licata, Mauro ; Lo Meo, Sergio ; Losito, Roberto ; Macina, Daniela ; Marganiec, Justyna ; Martínez, Trinitario ; Massimi, Cristian ; Mastinu, Pierfrancesco ; Mastromarco, Mario ; Matteucci, Francesca ; Mendoza Cembranos, Emilio ; Milazzo, Paolo Maria ; Mingrone, Federica ; Mirea, Mihail ; Montesano, Simone ; Musumarra, Agatino ; Nolte, Ralf ; Palomo Pinto, Francisco Rogelio ; Paradela Dobarro, Carlos ; Patronis, Nikolas ; Pavlik, Andreas ; Perkowski, Jarosław ; Porras Sánchez, José Ignacio ; Praena, Javier ; Quesada Molina, José Manuel ; Rauscher, Thomas ; Riego Pérez, Albert ; Robles Manzano, Maria Soledad ; Rubbia, Carlo ; Ryan, James A. ; Sabaté-Gilarte, Marta ; Saxena, Alok ; Schillebeeckx, Peter ; Schmidt, Stefan ; Schumann, Dorothea ; Sedyshev, Pavel V. ; Smith, Alastair Gavin ; Stamatopoulos, Athanasios ; Suryanarayana, Saraswatula Venkata ; Tagliente, Giuseppe ; Taı́n Enríquez, José Luis ; Tarifeño-Saldivia, Ariel ; Tassan-Got, Laurent ; Tsinganis, Andrea ; Vannini, Gianni ; Variale, Vincenzo ; Vaz, Pedro ; Ventura, Alberto ; Vlachoudis, Vasilis ; Vlastou, Rosa ; Wallner, Anton ; Warren, Stephen J. ; Weigand, Mario ; Wright, Tobias ; Žugec, Petar
73Ge(n, γ ) cross sections were measured at the neutron time-of-flight facility n_TOF at CERN up to neutron energies of 300 keV, providing for the first time experimental data above 8 keV. Results indicate that the stellar cross section at kT = 30 keV is 1.5 to 1.7 times higher than most theoretical predictions. The new cross sections result in a substantial decrease of 73Ge produced in stars, which would explain the low isotopic abundance of 73Ge in the solar system.
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