Polarized lanthanum target for the t-violation search in slow neutron transmission

Kohei Ishizaki, Hirohiko M. Shimizu, Masaaki Kitaguchi, Taku Matsushita, Masataka Iinuma, Hideki Kohri, Hiromoto Yoshikawa, Masaru Yosoi, Tatsushi Shima, Takahiro Iwata, Yoshiyuki Miyachi, Shigeru Ishimoto, Masaki Fujita, Yoichi Ikeda

Research output: Contribution to journalConference articlepeer-review


The Nd3+ doped LaAlO3 crystal is a good candidate of a polarized 139La target for the search of the P-odd and T-odd interaction in the low-energy neutron absorption of 139La. As the first step for realizing the polarized 139La target, we grow the undoped LaAlO3 crystal and the La1−xNdxAlO3 (x = 5 ×104) crystal by floating-zone method with four halogen lamps. The ESR measurements of Nd3+ in the latter crystal indicated that the linewidth was about 6 gauss, whose value is the same as the crystal in which 50 % 139La polarization was achieved in the previous DNP experiment. As the result, the crystals grown by this method can be applicable to the target study for the T-violation search.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - 2019
Event18th International Workshop on Polarized Sources, Targets, and Polarimetry, PSTP 2019 - Knoxville, United States
Duration: 2019 Sept 232019 Sept 27


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