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Measurement of 73 Ge( n , γ ) cross sections and implications for stellar nucleosynthesis

Lederer-Woods, C.; Battino, U.; Ferreira, P.; Gawlik, A.; Guerrero, C.; Gunsing, F.; Heinitz, S.; Lerendegui-Marco, J.; Mengoni, A.; Reifarth, R.; Tattersall, A.; Porras, J.I.; Praena, J.; Quesada, J.M.; Rauscher, T.; Riego-Perez, A.; Robles, M.; Rubbia, C.; Ryan, J.A.; Sabaté-Gilarte, M.; Saxena, A.; Valenta, S.; Schillebeeckx, P.; Schmidt, S.; Schumann, D.; Sedyshev, P.; Smith, A.G.; Stamatopoulos, A.; Suryanarayana, S.V.; Tagliente, G.; Tain, J.L.; Tarifeño-Saldivia, A.; Weiss, C.; Tassan-Got, L.; Tsinganis, A.; Vannini, G.; Variale, V.; Vaz, P.; Ventura, A.; Vlachoudis, V.; Vlastou, R.; Wallner, A.; Warren, S.; Aberle, O.; Weigand, M.; Wright, T.; Žugec, P.; Andrzejewski, J.; Audouin, L.; Bécares, V.; Bacak, M.; Balibrea, J.; Barbagallo, M.; Barros, S.; Bečvář, F.; Beinrucker, C.; Belloni, F.; Berthoumieux, E.; Billowes, J.; Bosnar, D.; Brugger, M.; Caamano, M.; Calviño, F.; Calviani, M.; Cano-Ott, D.; Cerutti, F.; Chiaveri, E.; Colonna, N.; Cortés, G.; Cortés-Giraldo, M.A.; Cosentino, L.; Damone, L.A.; Deo, K.; Diakaki, M.; Dietz, M.; Domingo-Pardo, C.; Dressler, R.; Dupont, E.; Durán, I.; Fernández-Domínguez, B.; Ferrari, A.; Finocchiaro, P.; Frost, R.J.W.; Furman, V.; Göbel, K.; García, A.R.; Gheorghe, I.; Glodariu, T.; Gonçalves, I.F.; González-Romero, E.; Goverdovski, A.; Griesmayer, E.; Harada, H.; Heftrich, T.; Hernández-Prieto, A.; Heyse, J.; Jenkins, D.G.; Jericha, E.; Käppeler, F.; Kadi, Y.; Katabuchi, T.; Kavrigin, P.; Ketlerov, V.; Khryachkov, V.; Kimura, A.; Kivel, N.; Knapova, I.; Kokkoris, M.; Krtička, M.; Leal-Cidoncha, E.; Leeb, H.; Licata, M.; Lo Meo, S.; Losito, R.; Macina, D.; Marganiec, J.; Martínez, T.; Massimi, C.; Mastinu, P.; Mastromarco, M.; Matteucci, F.; Mendoza, E.; Milazzo, P.M.; Mingrone, F.; Mirea, M.; Montesano, S.; Musumarra, A.; Nolte, R.; Palomo-Pinto, F.R.; Paradela, C.; Patronis, N.; Pavlik, A.; Perkowski, J.

Description

73 Ge( 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 73 Ge produced in stars, which would explain the low isotopic abundance of 73 Ge in the solar system.

CollectionsANU Research Publications
Date published: 2019-03-10
Type: Journal article
URI: http://hdl.handle.net/1885/156478
Source: Physics letters B
DOI: 10.1016/j.physletb.2019.01.045
Access Rights: Open Access

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