Publications

Measurement of the <sup>72</sup>Ge (n, γ) cross section over a wide neutron energy range at the CERN n_TOF facility

Author(s)
M. Dietz, C. Lederer-Woods, A. Tattersall, U. Battino, F. Gunsing, S. Heinitz, M. Krtička, J. Lerendegui-Marco, R. Reifarth, S. Valenta, O. Aberle, S. Amaducci, J. Andrzejewski, L. Audouin, M. Bacak, J. Balibrea, M. Barbagallo, F. Bečvář, E. Berthoumieux, J. Billowes, D. Bosnar, A. Brown, M. Caamaño, F. Calviño, M. Calviani, D. Cano-Ott, R. Cardella, A. Casanovas, F. Cerutti, Y. H. Chen, E. Chiaveri, N. Colonna, G. Cortés, M. A. Cortés-Giraldo, L. Cosentino, L. A. Damone, M. Diakaki, C. Domingo-Pardo, R. Dressler, E. Dupont, I. Durán, B. Fernández-Domínguez, A. Ferrari, P. Ferreira, P. Finocchiaro, V. Furman, K. Göbel, A. R. García, A. Gawlik, S. Gilardoni, T. Glodariu, I. F. Gonçalves, E. González-Romero, E. Griesmayer, C. Guerrero, H. Harada, J. Heyse, D. G. Jenkins, E. Jericha, F. Käppeler, Y. Kadi, D. Kahl, A. Kalamara, P. Kavrigin, A. Kimura, N. Kivel, M. Kokkoris, D. Kurtulgil, E. Leal-Cidoncha, H. Leeb, S. Lo Meo, S. J. Lonsdale, D. Macina, A. Manna, J. Marganiec, T. Martínez, A. Masi, C. Massimi, P. Mastinu, M. Mastromarco, E. A. Maugeri, A. Mazzone, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, A. Musumarra, A. Negret, R. Nolte, A. Oprea, N. Patronis, A. Pavlik, J. Perkowski, I. Porras, J. Praena, J. M. Quesada, D. Radeck, T. Rauscher, C. Rubbia, J. A. Ryan, M. Sabaté-Gilarte, A. Saxena, P. Schillebeeckx, D. Schumann, P. Sedyshev, A. G. Smith, N. V. Sosnin, A. Stamatopoulos, G. Tagliente, J. L. Tain, A. Tarifeño-Saldivia, L. Tassan-Got, G. Vannini, V. Variale, P. Vaz, A. Ventura, V. Vlachoudis, R. Vlastou, A. Wallner, S. Warren, C. Weiss, P. J. Woods, T. Wright, P. Žugec
Abstract

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.

Organisation(s)
Isotope Physics
External organisation(s)
University of Edinburgh, Physikalisch-Technische Bundesanstalt, Université Paris-Saclay, European Organization for Nuclear Research (CERN), Paul Scherrer Institute, Charles University Prague, Universidad de Sevilla, Johann Wolfgang Goethe-Universität Frankfurt am Main, Istituto Nazionale di Fisica Nucleare (INFN), Roma, Università degli Studi di Bologna, University of Lodz, Centre National de la Recherche Scientifique (CNRS), Technische Universität Wien, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, University of Manchester, University of Zagreb, York University, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, Università degli Studi di Bari, Universitat de València, Associação EURATOM/IST, Dubna, Horia Hulubei Natl Inst R&D Phys & Nucl Engn IFIN, Horia Hulubei National Institute of Physics & Nuclear Engineering, Extreme Light Infrastruct Nucl Phys, Japan Atomic Energy Agency, European Commission JRC, Karlsruher Institut für Technologie, National Technical University of Athens (NTUA), ENEA Centro Ricerche Bologna, Istituto Nazionale di Fisica Nucleare (INFN), Legnaro, CNR, Università degli Studi di Trieste, University of Ioannina, Universidad de Granada, Universität Basel, University of Hertfordshire, Bhabha Atomic Research Centre, Australian National University, Università degli Studi di Catania
Journal
Physical Review C
Volume
103
No. of pages
8
ISSN
2469-9985
DOI
https://doi.org/10.1103/PhysRevC.103.045809
Publication date
04-2021
Peer reviewed
Yes
Austrian Fields of Science 2012
103014 Nuclear physics
ASJC Scopus subject areas
Nuclear and High Energy Physics
Portal url
https://ucris.univie.ac.at/portal/en/publications/measurement-of-the-72ge-n--cross-section-over-a-wide-neutron-energy-range-at-the-cern-ntof-facility(dc1e4721-44ce-4f43-ae1a-f8fca995c03e).html