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Photoneutron cross sections for $$^{80}$$Se; Implications for the s-process thermometer

Makinaga, Ayano*; Utsunomiya, Hiroaki*; Kaihori, Takeshi*; Yamagata, Tamio*; Akimune, Hidetoshi*; Goriely, S.*; Toyokawa, Hiroyuki*; Matsumoto, Tetsuro*; Harano, Hideki*; Harada, Hideo   ; Goko, Shinji; Kitatani, Fumito  ; Hara, Kaoru*; Hohara, Shinya*; Lui, Y.-W.*

Photoneutron cross sections were measured for $$^{80}$$Se near the neutron threshold energy with quasi-monochromatic $$gamma$$ rays. Using the $$^{80}$$Se($$gamma$$,$$n$$) cross section as experimental constraints on the E1 $$gamma$$ strength function, we estimate the neutron capture rates for $$^{79}$$Se. The solar abundance ratio of s-only nuclides $$^{80}$$Kr and $$^{82}$$Kr are analyzed in terms of the s-process branching at $$^{79}$$Se within the local approximation. The corresponding temperature and neutron density regimes are discussed in the light of the s-process scenario in massive stars.

Language

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English

Journal

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Nuclear Physics A

Volume

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805

Number

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1-4

Pages

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p.564 - 566

Publication Year/Month

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2008/06

Meeting title

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International Nuclear Physics Conference (INPC 2007)

Held date

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2007/06

Location (city)

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Tokyo

Location (country)

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Japan

Patent information

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PDF

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Paper URL

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DOI for research data

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Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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産業技術総合研究所; 甲南大学

Accesses

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- Accesses

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