Development of a porous silica cavity for laser excitation of confined positronium
-
- Shu Kenji
- Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Yamada Kyohei
- Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Hashidate Kaori
- Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Ishida Akira
- Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Namba Toshio
- Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Asai Shoji
- Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Kuwata-Gonokami Makoto
- Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Tajima Yohei
- Photon Science Center (PSC), Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Chae Eunmi
- Photon Science Center (PSC), Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Yoshioka Kosuke
- Photon Science Center (PSC), Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
-
- Oshima Nagayasu
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
-
- O’Rourke Brian E.
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
-
- Michishio Koji
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
-
- Ito Kenji
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
-
- Kumagai Kazuhiro
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
-
- Suzuki Ryoichi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
-
- Fujino Shigeru
- Global Innovation Center (GIC), Kyushu University, Kasuga, Fukuoka 816-8580, Japan
-
- Hyodo Toshio
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
-
- Mochizuki Izumi
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
-
- Wada Ken
- National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma 370-1292, Japan
-
- Kai Takeshi
- Research Group for Radiation Transport and Analysis, Environment and Radiation Sciences Division, Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
Description
<p>Laser cooling of positronium (Ps) is an important technique to advance the frontier of science by, for instance, realizing the first Bose-Einstein condensation of antimatters. It was proposed that performing laser cooling on Ps trapped in a cryogenic porous material would be more efficient, but a recent study (Cooper, et al., Phys. Rev. B 97, 205302 (2018)) reported that Ps in the excited (2P) state inside nano pores of silica had a large decay rate into γ-rays, and the resonant spectrum of the transition was significantly broadened, both of which are critically problematic for the proposed cooling scheme. A possible cause of these unexplained results was proposed to be residual impurities which trapped Ps in the vicinity of the pore surface and then enhanced interactions between Ps and the material. This work reports fabrication and inspection of a new porous silica cavity without such impurities, and construction of an experimental system to induce the Lyman-α transition of Ps trapped in pores of the cavity.</p>
Journal
-
- JJAP Conference Proceedings
-
JJAP Conference Proceedings 9 (0), 011202-011202, 2023
The Japan Society of Applied Physics
- Tweet
Details 詳細情報について
-
- CRID
- 1390295104416312192
-
- ISSN
- 27582450
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- Crossref
- OpenAIRE
-
- Abstract License Flag
- Allowed