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Spin dependence in the $$p$$-wave resonance of $$^{139}$$$overrightarrow{textrm{La}}$+$overrightarrow{n}$

$$^{139}$$$overrightarrow{textrm{La}}$+$overrightarrow{n}$反応における$$p$$波共鳴のスピン依存性

奥平 琢也*; 中部 倫太郎*; Auton, C. J.*; 遠藤 駿典   ; 藤岡 宏之*; Gudkov, V.*; 井出 郁央*; 猪野 隆*; 石角 元志*; 神原 理*; 河村 しほり; 小林 龍珠*; 北口 雅暁*; 岡村 崇弘*; 奥 隆之   ; Otero Munoz, J. G.*; Parker, J. D.*; 酒井 健二 ; 嶋 達志*; 清水 裕彦*; 篠原 武尚   ; Snow, W. M.*; 高田 秀佐*; 土川 雄介 ; 高橋 竜太*; 高橋 慎吾; 吉川 大幹*; 吉岡 瑞樹*

Okudaira, Takuya*; Nakabe, Rintaro*; Auton, C. J.*; Endo, Shunsuke; Fujioka, Hiroyuki*; Gudkov, V.*; Ide, Ikuo*; Ino, Takashi*; Ishikado, Motoyuki*; Kambara, Wataru*; Kawamura, Shihori; Kobayashi, Ryuju*; Kitaguchi, Masaaki*; Okamura, Takahiro*; Oku, Takayuki; Otero Munoz, J. G.*; Parker, J. D.*; Sakai, Kenji; Shima, Tatsushi*; Shimizu, Hirohiko*; Shinohara, Takenao; Snow, W. M.*; Takada, Shusuke*; Tsuchikawa, Yusuke; Takahashi, Ryuta*; Takahashi, Shingo; Yoshikawa, Hiromoto*; Yoshioka, Tamaki*

We measured the spin dependence in a neutron-induced p-wave resonance by using a polarized epithermal neutron beam and a polarized nuclear target. Our study focuses on the 0.75 eV $$p$$-wave resonance state of $$^{139}$$La+n, where largely enhanced parity violation has been observed. We determined the partial neutron width of the $$p$$-wave resonance by measuring the spin dependence of the neutron absorption cross section between polarized $$^{139}$$La and polarized neutrons. Our findings serve as a foundation for the quantitative study of the enhancement effect of the discrete symmetry violations caused by mixing between partial amplitudes in the compound nuclei.

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パーセンタイル:78.45

分野:Physics, Nuclear

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