Ultra Slow Muon Microscopy for Nano-science

• Published in: Journal of physics. Conference series Vol. 302; no. 1; pp. 12038 - 6
• Main Authors: Miyake, Y, Nishida, N, Yoshino, J, Higemoto, W, Torikai, E, Shimomura, K, Ikedo, Y, Kawamura, N, Strasser, P, Makimura, S, Fujimori, H, Nakahara, K, Koda, A, Kobayashi, Y, Nishiyama, K, Kadono, R, Ogitsu, T, Makida, Y, Sasaki, K, Adachi, T, Nagamine, K
• Format: Journal Article
• Language: English
• Published: 01.01.2011
• Subjects: Magnetic properties; Meters; Microscopy; Muons; Nanostructure; Particle beams; Particle spin; Pions
• ISSN: 1742-6596; 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/302/1/012038

The "surface" muon beam which has been used for the studies of condensed matter physics or chemistry is conventionally obtained from the decay of positive pions ([pi] super(+)) stopped near the surface of the pion production target in the proton beam line and has large energy broadening with an implantation depth of 0.1 to 1 mm. Despite the name of "surface" muon, it is used as a probe of bulk phenomena rather than surface phenomena. In these two decades, the new method to generate ultra-slow muon beam with energy 0.2 eV has been developed and successfully obtained by KEK and RIKEN group. When the production of intense ultra-slow muon source will be realized, the use of its short-range penetration depth will allow muon science to be expanded towards a variety of new nano-scienti c elds, which we call "Ultra Slow Muon Microscope" such as, 1) Surface/boundary magnetism utilizing its spin polarization and unique time-window. 2) Surface chemistry, utilizing a feature of a light isotope of hydrogen; such as catalysis reactions. 3) Muon Microscopy, utilizing a feature of micron meter beam size, when ultra slow muon is accelerated. 4) Precise atomic physics testing QED, since Mu is the simplest lepton pair consisting mu super(+) and e. 5) Ion sources for "g-2" experiment, and towards mu super(+) mu collider experiments in high-energy physics. Int this paper, the latest status of the intense low-emittance ultra slow muon source and its scienti c prospects will be reported.