Radio frequency discharge apparatus for studying spin transfer from solid surfaces to metastable helium gas

固体表面から準安定ヘリウムガスへのスピン移動を研究するための高周波放電装置

丸山 遥香*; 齊藤 英治; 他2名*

Maruyama, Haruka*; Saito, Eiji; 2 of others*

We developed a radio frequency discharge apparatus for He gas to investigate the spin states of metastable helium (He) interacting with solid-state surfaces. Our apparatus consisted of a stainless steel vacuum chamber, in which a coil produced He by discharging introduced He gas. The spin states of the He were detected using optical pumping and probing techniques. The chamber was designed to accommodate various solid-state samples. We measured the He polarization produced at a dielectric prism surface by total internal reflection of the circularly polarized pumping light. Our apparatus can be used to investigate possible spin transfer from various solid surfaces to He atoms.