Measurement of the ${}^{72}\mathrm{Ge}(n,\gamma)$ cross section over a wide neutron energy range at the CERN n_TOF facility

Autor: DIETZ, M., LEDERER-WOODS, C., TATTERSALL, A., BATTINO, U., GUNSING, F., HEINITZ, S., KRTIČKA, M., LERENDEGUI-MARCO, J., REIFARTH, R., VALENTA, S., ABERLE, O., AMADUCCI, S., ANDRZEJEWSKI, J., AUDOUIN, L., BACAK, M., BALIBREA, J., BARBAGALLO, M., BEČVÁŘ, F., BERTHOUMIEUX, E., BILLOWES, J., BOSNAR, D., BROWN, A., CAAMAÑO, M., CALVIÑO, F., CALVIANI, M., CANO-OTT, D., CARDELLA, R., CASANOVAS, A., CERUTTI, F., CHEN, Y.H., CHIAVERI, E., COLONNA, N., CORTÉS, G., CORTÉS-GIRALDO, M.A., COSENTINO, L., DAMONE, L.A., DIAKAKI, M., DOMINGO-PARDO, C., DRESSLER, R., DUPONT, E., DURÁN, I., FERNÁNDEZ-DOMÍNGUEZ, B., FERRARI, A., FERREIRA, P., FINOCCHIARO, P., FURMAN, V., GÖBEL, K., GARCÍA, A.R., GAWLIK, A., GILARDONI, S., GLODARIU, T., GONÇALVES, I.F., GONZÁLEZ-ROMERO, E., GRIESMAYER, E., GUERRERO, C., HARADA, H., HEYSE, J., JENKINS, D.G., JERICHA, E., KÄPPELER, F., KADI, Y., KAHL, D., KALAMARA, A., KAVRIGIN, P., KIMURA, A., KIVEL, N., KOKKORIS, M., KURTULGIL, D., LEAL-CIDONCHA, E., LEEB, H., LO MEO, S., LONSDALE, S.J., MACINA, D., MANNA, A., MARGANIEC, J., MARTÍNEZ, T., MASI, A., MASSIMI, C., MASTINU, P., MASTROMARCO, M., MAUGERI, E.a., MAZZONE, A., MENDOZA, E., MENGONI, A., MILAZZO, P.M., MINGRONE, F., MUSUMARRA, A., NEGRET, A., NOLTE, R., OPREA, A., PATRONIS, N., PAVLIK, A., PERKOWSKI, J., PORRAS, I., PRAENA, J., QUESADA, J.M., RADECK, D., RAUSCHER, T., RUBBIA, C., RYAN, J.A., SABATÉ-GILARTE, M., SAXENA, A., SCHILLEBEECKX, P., SCHUMANN, D., SEDYSHEV, P., SMITH, A.G., SOSNIN, N.V., STAMATOPOULOS, A., TAGLIENTE, G., TAIN, J.L., TARIFEÑO-SALDIVIA, A., TASSAN-GOT, L., VANNINI, G., VARIALE, V., VAZ, P., VENTURA, A., VLACHOUDIS, V., VLASTOU, R., WALLNER, A., WARREN, S., WEISS, C., WOODS, P.J., WRIGHT, T., ŽUGEC, P.
Přispěvatelé: Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), n_TOF, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Physical Review C
Physical Review C, American Physical Society, 2021, 103 (4), pp.045809. ⟨10.1103/PhysRevC.103.045809⟩
Phys.Rev.C
Phys.Rev.C, 2021, 103 (4), pp.045809. ⟨10.1103/PhysRevC.103.045809⟩
ISSN: 2469-9985
2469-9993
Popis: International audience; The Ge72(n,γ) cross section was measured for neutron energies up to 300keV at the neutron time-of-flight facility n_TOF (CERN), Geneva, for the first time covering energies relevant to heavy-element synthesis in stars. The measurement was performed at the high-resolution beamline EAR-1, using an isotopically enriched GeO272 sample. The prompt capture γ rays were detected with four liquid scintillation detectors, optimized for low neutron sensitivity. We determined resonance capture kernels up to a neutron energy of 43keV, and averaged cross sections from 43 to 300keV. Maxwellian-averaged cross section values were calculated from kT=5 to 100keV, with uncertainties between 3.2% and 7.1%. The new results significantly reduce uncertainties of abundances produced in the slow neutron capture process in massive stars.
Databáze: OpenAIRE
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