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

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.