Measurement of P-Violation in 139La(n,γ)140La – a first step towards a T-Violation search

Measurement of P-Violation in 139La(n,γ)140La – a first step towards a T-Violation search

We performed a polarized neutron transmission asymmetry measurement utilizing the 139La(n,γ)140La reaction. This measurement involved the use of a recently developed 3He spin filter mounted on the J-PARC MLF beam line number 4 (BL04). The resulting value of the longitudinal asymmetry AL = (11.7 ± 1....

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Bibliographic Details
Main Authors: Yamamoto Tomoki, Shimizu Hirohiko M., Kitaguchi Masaaki, Hirota Katsuya, Haddock Christopher C., Endo Shunsuke, Ishizaki Kohei, Sato Takumi, Takada Shusuke, Koga Jun, Yoshioka Tamaki, Ino Takashi, Asahi Koichiro, Momose Takamasa, Iwata Takahiro, Sakai Kenji, Okudaira Takuya, Oku Takayuki, Kimura Atsushi, Hino Masahiro, Shima Tatsushi, Yamagata Yutaka
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2019/24/epjconf-ppns2019_09002.pdf
Description
Summary:We performed a polarized neutron transmission asymmetry measurement utilizing the 139La(n,γ)140La reaction. This measurement involved the use of a recently developed 3He spin filter mounted on the J-PARC MLF beam line number 4 (BL04). The resulting value of the longitudinal asymmetry AL = (11.7 ± 1.1)% was found to be in good agreement with existing values in the literature suggesting that the method by which we polarize the neutron beam is not a significant source of uncertainty. This preliminary work represents a first step toward future measurements of the angular correlation in (n̅,Υ) reactions necessary in the search for enhanced T-Violation in compound nuclei.
ISSN:2100-014X

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