Radio frequency discharge apparatus for studying spin transfer from solid surfaces to metastable helium gas
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Atomic and Subatomic Physics Research · Quantum, superfluid, helium dynamics · Physics of Superconductivity and Magnetism
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Applied Physics, Tokyo University of Agriculture and Technology 1 , Koganei, Tokyo 184-8588, Japan
Department of Applied Physics, Faculty of Engineering, The University of Tokyo 2 , Bunkyo-ku, Tokyo 113-8656, Japan
Institute for AI and Beyond, The University of Tokyo 3 , Bunkyo-ku, Tokyo 113-8656, Japan
Quantum-Phase Electronics Center, The University of Tokyo 4 , Bunkyo-ku, Tokyo 113-8656, Japan
Advanced Institute for Materials Research, Tohoku University 5 , Sendai, Miyagi 980-8577, Japan
Advanced Science Research Center, Japan Atomic Energy Agency 6 , Tokai, Ibaraki 319-1195, Japan
Funding
Ministry of Education, Culture, Sports, Science and Technology · Japan Science Society
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