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宇都宮 弘章*; 秋宗 秀俊*; 山県 民穂*; 岩本 ちひろ*; Goriely, S.*; Daoutidis, I.*; 豊川 弘之*; 原田 秀郎; 北谷 文人; 岩本 信之; et al.
Proceedings of 14th International Symposium on Capture -Ray Spectroscopy and Related Topics, p.505 - 514, 2013/05
Radiative neutron capture cross section are of direct relevance for the synthesis of heavy elements referred to as the s-process and the r-process in nuclear astrophysics and constitute basic data in the field of nuclear engineering. The surrogate reaction technique is in active use to indirectly determine radiative neutron capture cross sections for unstable nuclei. We have devised an indirect method alternative to the surrogate reaction technique on the basis of the -ray strength function (-SF), a nuclear statistical quantity that interconnects photoneutron emission and radiative neutron capture in Hauser-Feshbach model calculation. The primary strength of the -SF is low-energy E1 strength in the tail of GDR. We outline the -SF method and show application of the method to Zr, Pd and Sn isotopes. In the application of the -SF method, it is important to use -SF, which incorporates extra strengths of PDR and/or M1 resonance emerging around neutron threshold.
宇都宮 弘章*; Goriely, S.*; Arteaga, D. P.*; Daoutidis, I.*; 秋宗 秀俊*; 山県 民穂*; 近藤 壮雄*; 岩本 ちひろ*; 鎌田 正輝*; 伊藤 修*; et al.
AIP Conference Proceedings 1377, p.450 - 452, 2011/10
被引用回数:0 パーセンタイル:0.05(Astronomy & Astrophysics)Photoneutron cross sections were measured for Pd, Pd, and Pd with laser-Compton scattering -ray beams in an application of the SF method to a radioactive nucleus Pd. We present radiative neutron cross sections for Pd [6.510 y] obtained with the SF method.
宇都宮 弘章*; Goriely, S.*; 秋宗 秀俊*; 原田 秀郎; 北谷 文人; 後神 進史*; 豊川 弘之*; 山田 家和勝*; 近藤 壮雄*; 伊藤 修*; et al.
Physical Review C, 82(6), p.064610_1 - 064610_5, 2010/12
被引用回数:40 パーセンタイル:88.53(Physics, Nuclear)放射性核種の中性子捕獲断面積を間接的に決定するために線強度関数法を考案した。本手法をPdの場合に適用した。中性子発生閾値近傍のPdに対する光中性子生成断面積を準単色レーザー逆コンプトン光を用いて測定した。これらの測定値及びPdに対する中性子捕獲断面積を用い、Pd(n,) Pd反応断面積値を絞り込んだ。