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Alpha induced cross section measurements on 162Er for the astrophysical γ-process
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 2849745
Author(s) Kiss, G. G.; Szuecs, T.; Rauscher, T.; Toeroek, Zs.; Fueloep, Zs.; Gyuerky, Gy.; Halasz, Z.; Somorjai, E.
Author(s) at UniBasel Rauscher, Thomas
Year 2014
Title Alpha induced cross section measurements on 162Er for the astrophysical γ-process
Journal Physics letters. B
Volume 735
Pages / Article-Number 40-44
Keywords Nuclear astrophysics, Nucleosynthesis, Astrophysical gamma-process, Statistical model
Abstract The cross sections of the Er-162(alpha, gamma) Yb-166 and Er-162(alpha, n) Yb-165 reactions have been measured for the first time. The radiative alpha capture reaction cross section was measured from E-c.m. = 16.09 MeV down to E-c.m. = 11.21 MeV, close to the astrophysically relevant region (which lies between 7.8 and 11.48 MeV at 3 GK stellar temperature). The Er-162(alpha, n) Yb-165 reaction was studied above the reaction threshold between E-c.m. = 12.19 and 16.09 MeV. The fact that the Er-162(alpha, gamma) Yb-166 cross sections were measured below the (alpha, n) threshold at first time in this mass region opens the opportunity to study directly the alpha-widths required for the determination of astrophysical reaction rates. The data clearly show that compound nucleus formation in this reaction proceeds differently than previously predicted. (C) 2014 The Authors. Published by Elsevier B.V.
Publisher North-Holland
ISSN/ISBN 0370-2693
edoc-URL http://edoc.unibas.ch/dok/A6348484
Full Text on edoc No
Digital Object Identifier DOI 10.1016/j.physletb.2014.06.011
ISI-Number WOS:000340048900006
Document type (ISI) Article
 
   

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