Striking behavior of photoneutron cross sections for Zr near threshold

宇都宮 弘章*; Goriely, S.*; 秋宗 秀俊*; 山形 民穂*; 近藤 壮雄*; 岩本 ちひろ*; 伊藤 修*; 鎌田 正輝*; 井尾 雅則*; 楠瀬 幸一*; et al.

AIP Conference Proceedings 1377, p.447 - 449, 2010/10

https://doi.org/10.1063/1.3628441

Photoneutron cross sections for Zr near neutron threshold were examined with a photon difference technique using laser Compton scattering -ray beams. The cross section decreasing in the vicinity of neutron threshold exhibited a steep rise within 150 keV above the threshold. We draw attention to a possible relation of this striking behavior to the 3P valence neutron resonance known in neutron capture in the mass region A 90.