The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOF
The slow neutron capture process (s-process) is responsible for producing about half of the elemental abundances heavier than iron in the universe. Neutron capture cross sections on stable isotopes are a key nuclear physics input for s-process studies. The 72Ge(n, γ) Maxwellian-Averaged Cross Sectio...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/10/epjconf_nd2023_01017.pdf |
| _version_ | 1797807730361106432 |
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| author | Dietz M. Lederer-Woods C. Tattersall A. Battino U. Gunsing F. Heinitz S. Lerendegui-Marco J. Krtička M. 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. Göbel K. García A. R. Gawlik-Ramie˛ga 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. Krtička 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. 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. |
| author_facet | Dietz M. Lederer-Woods C. Tattersall A. Battino U. Gunsing F. Heinitz S. Lerendegui-Marco J. Krtička M. 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. Göbel K. García A. R. Gawlik-Ramie˛ga 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. Krtička 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. 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. |
| author_sort | Dietz M. |
| collection | DOAJ |
| description | The slow neutron capture process (s-process) is responsible for producing about half of the elemental abundances heavier than iron in the universe. Neutron capture cross sections on stable isotopes are a key nuclear physics input for s-process studies. The 72Ge(n, γ) Maxwellian-Averaged Cross Section (MACS) has an important influence on the production of isotopes between Ge and Zr in the weak s-process in massive stars and so far only theoretical estimations are available. An experiment was carried out at the neutron time-of-flight facility n_TOF at CERN to measure the 72Ge(n, γ) reaction for the first time at stellar neutron energies. The capture measurement was performed using an enriched 72GeO2 sample at a flight path length of 184 m, which provided high neutron energy resolution. The prompt gamma rays produced after neutron capture were detected with a set of liquid scintillation detectors (C6D6). The neutron capture yield is derived from the counting spectra taking into account the neutron flux and the gamma-ray detection efficiency using the Pulse Height Weighting Technique. Over 70 new neutron resonances were identified, providing an improved resolved reaction cross section to calculate experimental MACS values for the first time. The experiment, data analysis and the new MACS results will be presented including their impact on stellar nucleosynthesis, which was investigated using the post-processing nucleosynthesis code mppnp for a 25 solar mass model. |
| first_indexed | 2024-03-13T06:27:00Z |
| format | Article |
| id | doaj.art-976fbc96e9d141febd6e1d053df19045 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-03-13T06:27:00Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-976fbc96e9d141febd6e1d053df190452023-06-09T09:16:15ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012840101710.1051/epjconf/202328401017epjconf_nd2023_01017The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOFDietz M.0Lederer-Woods C.1Tattersall A.2Battino U.3Gunsing F.4Heinitz S.5Lerendegui-Marco J.6Krtička M.7Reifarth R.8Valenta S.9Aberle O.10Amaducci S.11Andrzejewski J.12Audouin L.13Bacak M.14Balibrea J.15Barbagallo M.16Bečvář F.17Berthoumieux E.18Billowes J.19Bosnar D.20Brown A.21Caamaño M.22Calviño F.23Calviani M.24Cano-Ott D.25Cardella R.26Casanovas A.27Cerutti F.28Chen Y. H.29Chiaveri E.30Colonna N.31Cortés G.32Cortés-Giraldo M. A.33Cosentino L.34Damone L. A.35Diakaki M.36Domingo-Pardo C.37Dressler R.38Dupont E.39Durán I.40Fernández-Domínguez B.41Ferrari A.42Ferreira P.43Finocchiaro P.44Göbel K.45García A. R.46Gawlik-Ramie˛ga A.47Gilardoni S.48Glodariu† T.49Gonçalves I. F.50González-Romero E.51Griesmayer E.52Guerrero C.53Harada H.54Heyse J.55Jenkins D. G.56Jericha E.57Käppeler† F.58Kadi Y.59Kahl D.60Kalamara A.61Kavrigin P.62Kimura A.63Kivel N.64Kokkoris M.65Krtička M.66Kurtulgil D.67Leal-Cidoncha E.68Leeb H.69Lo Meo S.70Lonsdale S. J.71Macina D.72Manna A.73Marganiec J.74Martínez T.75Masi A.76Massimi C.77Mastinu P.78Mastromarco M.79Maugeri E. A.80Mazzone A.81Mendoza E.82Mengoni A.83Milazzo P. M.84Mingrone F.85Musumarra A.86Negret A.87Nolte R.88Oprea A.89Patronis N.90Pavlik A.91Perkowski J.92Porras I.93Praena J.94Quesada J. M.95Radeck D.96Rauscher T.97Rubbia C.98Ryan J. A.99Sabaté-Gilarte M.100Saxena A.101Schillebeeckx P.102Schumann D.103Smith A. G.104Sosnin N. V.105Stamatopoulos A.106Tagliente G.107Tain J. L.108Tarifeño-Saldivia A.109Tassan-Got L.110Vannini G.111Variale V.112Vaz P.113Ventura A.114Vlachoudis V.115Vlastou R.116Wallner A.117Warren S.118Weiss C.119Woods P. J.120Wright T.121Žugec P.122School of Physics and Astronomy, University of EdinburghSchool of Physics and Astronomy, University of EdinburghSchool of Physics and Astronomy, University of EdinburghSchool of Physics and Astronomy, University of EdinburghCEA Irfu, Université Paris-SaclayPaul Scherrer Institut (PSI)Universidad de SevillaCharles UniversityGoethe University FrankfurtCharles UniversityEuropean Organization for Nuclear Research (CERN)Istituto Nazionale di Fisica NucleareUniversity of LodzInstitut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-SaclayTU Wien, AtominstitutCentro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)Istituto Nazionale di Fisica NucleareCharles UniversityCEA Irfu, Université Paris-SaclayUniversity of ManchesterDepartment of Physics, Faculty of Science, University of ZagrebUniversity of YorkUniversity of Santiago de CompostelaUniversitat Politècnica de CatalunyaEuropean Organization for Nuclear Research (CERN)Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)European Organization for Nuclear Research (CERN)Universitat Politècnica de CatalunyaEuropean Organization for Nuclear Research (CERN)Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-SaclayEuropean Organization for Nuclear Research (CERN)Istituto Nazionale di Fisica NucleareUniversitat Politècnica de CatalunyaUniversidad de SevillaINFN Laboratori Nazionali del SudIstituto Nazionale di Fisica NucleareCEA Irfu, Université Paris-SaclayInstituto de Física Corpuscular, CSIC - Universidad de ValenciaPaul Scherrer Institut (PSI)CEA Irfu, Université Paris-SaclayUniversity of Santiago de CompostelaUniversity of Santiago de CompostelaEuropean Organization for Nuclear Research (CERN)Instituto Superior TécnicoINFN Laboratori Nazionali del SudGoethe University FrankfurtCentro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)University of LodzEuropean Organization for Nuclear Research (CERN)Horia Hulubei National Institute of Physics and Nuclear EngineeringInstituto Superior TécnicoCentro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)TU Wien, AtominstitutUniversidad de SevillaJapan Atomic Energy Agency (JAEA)European Commission, Joint Research Centre (JRC)University of YorkTU Wien, AtominstitutKarlsruhe Institute of TechnologyEuropean Organization for Nuclear Research (CERN)School of Physics and Astronomy, University of EdinburghNational Technical University of AthensTU Wien, AtominstitutJapan Atomic Energy Agency (JAEA)Paul Scherrer Institut (PSI)National Technical University of AthensCharles UniversityGoethe University FrankfurtUniversity of Santiago de CompostelaTU Wien, AtominstitutAgenzia nazionale per le nuove tecnologie (ENEA)School of Physics and Astronomy, University of EdinburghEuropean Organization for Nuclear Research (CERN)Istituto Nazionale di Fisica NucleareUniversity of LodzCentro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)European Organization for Nuclear Research (CERN)Istituto Nazionale di Fisica NucleareINFN Laboratori Nazionali di LegnaroIstituto Nazionale di Fisica NuclearePaul Scherrer Institut (PSI)Istituto Nazionale di Fisica NucleareCentro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)Agenzia nazionale per le nuove tecnologie (ENEA)Istituto Nazionale di Fisica Nucleare, Sezione di TriesteEuropean Organization for Nuclear Research (CERN)INFN Laboratori Nazionali del SudHoria Hulubei National Institute of Physics and Nuclear EngineeringPhysikalisch-Technische Bundesanstalt (PTB)Horia Hulubei National Institute of Physics and Nuclear EngineeringUniversity of IoanninaUniversity of Vienna, Faculty of PhysicsUniversity of LodzUniversity of GranadaUniversity of GranadaUniversidad de SevillaPhysikalisch-Technische Bundesanstalt (PTB)Department of Physics, University of BaselEuropean Organization for Nuclear Research (CERN)University of ManchesterEuropean Organization for Nuclear Research (CERN)Bhabha Atomic Research Centre (BARC)European Commission, Joint Research Centre (JRC)Paul Scherrer Institut (PSI)University of ManchesterUniversity of ManchesterNational Technical University of AthensIstituto Nazionale di Fisica NucleareInstituto de Física Corpuscular, CSIC - Universidad de ValenciaUniversitat Politècnica de CatalunyaInstitut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-SaclayIstituto Nazionale di Fisica NucleareIstituto Nazionale di Fisica NucleareInstituto Superior TécnicoIstituto Nazionale di Fisica NucleareEuropean Organization for Nuclear Research (CERN)National Technical University of AthensAustralian National UniversityUniversity of ManchesterTU Wien, AtominstitutSchool of Physics and Astronomy, University of EdinburghUniversity of ManchesterDepartment of Physics, Faculty of Science, University of ZagrebThe slow neutron capture process (s-process) is responsible for producing about half of the elemental abundances heavier than iron in the universe. Neutron capture cross sections on stable isotopes are a key nuclear physics input for s-process studies. The 72Ge(n, γ) Maxwellian-Averaged Cross Section (MACS) has an important influence on the production of isotopes between Ge and Zr in the weak s-process in massive stars and so far only theoretical estimations are available. An experiment was carried out at the neutron time-of-flight facility n_TOF at CERN to measure the 72Ge(n, γ) reaction for the first time at stellar neutron energies. The capture measurement was performed using an enriched 72GeO2 sample at a flight path length of 184 m, which provided high neutron energy resolution. The prompt gamma rays produced after neutron capture were detected with a set of liquid scintillation detectors (C6D6). The neutron capture yield is derived from the counting spectra taking into account the neutron flux and the gamma-ray detection efficiency using the Pulse Height Weighting Technique. Over 70 new neutron resonances were identified, providing an improved resolved reaction cross section to calculate experimental MACS values for the first time. The experiment, data analysis and the new MACS results will be presented including their impact on stellar nucleosynthesis, which was investigated using the post-processing nucleosynthesis code mppnp for a 25 solar mass model.https://www.epj-conferences.org/articles/epjconf/pdf/2023/10/epjconf_nd2023_01017.pdf |
| spellingShingle | Dietz M. Lederer-Woods C. Tattersall A. Battino U. Gunsing F. Heinitz S. Lerendegui-Marco J. Krtička M. 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. Göbel K. García A. R. Gawlik-Ramie˛ga 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. Krtička 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. 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. The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOF EPJ Web of Conferences |
| title | The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOF |
| title_full | The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOF |
| title_fullStr | The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOF |
| title_full_unstemmed | The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOF |
| title_short | The Stellar 72Ge(n, γ) Cross Section for weak s-process: A First Measurement at n_TOF |
| title_sort | stellar 72ge n γ cross section for weak s process a first measurement at n tof |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/10/epjconf_nd2023_01017.pdf |
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