학술논문
Measurement of 73Ge(n,γ) cross sections and implications for stellar nucleosynthesis
Document Type
article
Author
C. Lederer-Woods; U. Battino; P. Ferreira; A. Gawlik; C. Guerrero; F. Gunsing; S. Heinitz; J. Lerendegui-Marco; A. Mengoni; R. Reifarth; A. Tattersall; S. Valenta; C. Weiss; O. Aberle; J. Andrzejewski; L. Audouin; V. Bécares; M. Bacak; J. Balibrea; M. Barbagallo; S. Barros; F. Bečvář; C. Beinrucker; F. Belloni; E. Berthoumieux; J. Billowes; D. Bosnar; M. Brugger; M. Caamaño; F. Calviño; M. Calviani; D. Cano-Ott; F. Cerutti; E. Chiaveri; N. Colonna; G. Cortés; M.A. Cortés-Giraldo; L. Cosentino; L.A. Damone; K. Deo; M. Diakaki; M. Dietz; C. Domingo-Pardo; R. Dressler; E. Dupont; I. Durán; B. Fernández-Domínguez; A. Ferrari; P. Finocchiaro; R.J.W. Frost; V. Furman; K. Göbel; A.R. García; I. Gheorghe; T. Glodariu; I.F. Gonçalves; E. González-Romero; A. Goverdovski; E. Griesmayer; H. Harada; T. Heftrich; A. Hernández-Prieto; J. Heyse; D.G. Jenkins; E. Jericha; F. Käppeler; Y. Kadi; T. Katabuchi; P. Kavrigin; V. Ketlerov; V. Khryachkov; A. Kimura; N. Kivel; I. Knapova; M. Kokkoris; M. Krtička; E. Leal-Cidoncha; H. Leeb; M. Licata; S. Lo Meo; R. Losito; D. Macina; J. Marganiec; T. Martínez; C. Massimi; P. Mastinu; M. Mastromarco; F. Matteucci; E. Mendoza; P.M. Milazzo; F. Mingrone; M. Mirea; S. Montesano; A. Musumarra; R. Nolte; F.R. Palomo-Pinto; C. Paradela; N. Patronis; A. Pavlik; J. Perkowski; J.I. Porras; J. Praena; J.M. Quesada; T. Rauscher; A. Riego-Perez; M. Robles; C. Rubbia; J.A. Ryan; M. Sabaté-Gilarte; A. Saxena; P. Schillebeeckx; S. Schmidt; D. Schumann; P. Sedyshev; A.G. Smith; A. Stamatopoulos; S.V. Suryanarayana; G. Tagliente; J.L. Tain; A. Tarifeño-Saldivia; L. Tassan-Got; A. Tsinganis; G. Vannini; V. Variale; P. Vaz; A. Ventura; V. Vlachoudis; R. Vlastou; A. Wallner; S. Warren; M. Weigand; T. Wright; P. Žugec
Source
Physics Letters B, Vol 790, Iss , Pp 458-465 (2019)
Subject
Language
English
ISSN
0370-2693
Abstract
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. Keywords: Nucleosynthesis, Neutron capture, s process, Germanium, n_TOF