Current status of a polarized neutron reflectometer "SHARAKU" in J-PARC

J-PARCにおける偏極中性子反射率計「写楽」の現状

曽山 和彦  ; 青木 裕之  ; 山崎 大  ; 宮田 登*; 阿久津 和宏*; 花島 隆泰*; 笠井 聡*; 鈴木 淳市*

Soyama, Kazuhiko; Aoki, Hiroyuki; Yamazaki, Dai; Miyata, Noboru*; Akutsu, Kazuhiro*; Hanashima, Takayasu*; Kasai, Satoshi*; Suzuki, Junichi*

SHARAKU is a neutron reflectometer using polarized neutron pulses in Materials and Life Science Experiment Facility (MLF) in Japan Proton Accelerator Research Complex (J-PARC). A polarization reflectometry can probe not only a nanometric layered structure with a contrast of an atomic neutron scattering length but also of a magnetic scattering length; therefore, SHARAKU is a powerful tool to analyze a magnetic structure in a magnetic thin film. SHARAKU has large flexibility of the sample environment. In addition to a 1-T magnet and a 4-K refrigerator for the magnetic samples, we have recently developed a liquid immersion cell and atmosphere control chamber for soft-matters. The user experimental programs have been carried out in various fields such as solid state physics, polymer physics, and electro-chemistry.