Study of neutron-nuclear spin correlation term with a polarized xenon target

Sakai, Kenji ; Oku, Takayuki   ; Okudaira, Takuya; Kai, Tetsuya   ; Harada, Masahide   ; Hiroi, Kosuke  ; Hayashida, Hirotoshi*; Shimizu, Hirohiko*; Yamamoto, Tomoki*; Ino, Takashi*; Hirota, Katsuya*

In neutron fundamental physics, a study of correlation term of a neutron spin s and a target nuclear spin is important because the term interferes to parity non-conserving (PNC) and time reversal non-conserving (TRNC) terms. For this study, a xenon (Xe) is an interesting nucleus because it has been observed an enhancement of PNC effect around neutron resonance peaks, and polarizes up to by using a spin exchange optical pumping (SEOP) method. We attempted to develop a polarized Xe target in a compact SEOP system and measure neutron polarizing ability caused by the term at a 9.6 eV -wave resonance peak of Xe, by detecting change of a ratio between neutron transmissions with the polarized and unpolarized Xe target. As preliminary results, we observed a signified value of after demonstrating that our apparatus could distinguish Doppler broadening effect as systematic error.