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Title: Observation of low-lying resonances in the quasicontinuum of 195,196Pt and enhanced astrophysical reaction rates

An excess of strength on the low-energy tail of the giant dipole resonance recently has been observed in the γ-decay from the quasicontinuum of 195,196Pt. The nature of this phenomenon is not yet fully investigated. If this feature is present also in the γ-ray strength of the neutron-rich isotopes, it can affect the neutron-capture reactions involved in the formation of heavy-elements in stellar nucleosynthesis. The experimental level density and γ-ray strength function of 195,196Pt are presented together with preliminary calculations of the corresponding neutron-capture cross sections.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [1] ;  [1] ;  [1] ;  [1] ;  [5] ; ;
  1. Univ. of Oslo, Olso (Norway). Dept. of Physics.
  2. Univ. of Oslo, Olso (Norway). Dept. of Physics; Univ. of Stellenbosch, Stellenbosch (South Africa)
  3. Air Force Technical Applications Center, Patrick Air Force Base, FL (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Univ. of Oslo, Olso (Norway). Dept. of Physics; Institute of Nuclear Research of the Hungarian Academy of Science, Debrecen (Hungary)
Publication Date:
OSTI Identifier:
1210039
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
EPJ Web of Conferences
Additional Journal Information:
Journal Volume: 93; Journal ID: ISSN 2100-014X
Publisher:
EDP Sciences
Research Org:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS