Go Yoshida

Muon capture probability of carbon and oxygen for CO, CO2, and COS under low-pressure gas conditions

When a negatively charged muon is stopped in a substance, it is captured by an atom of the substance, and the muonic atom is formed. The muon capture process is significantly affected by the chemical environment of the atom and factors such as molecular structure (chemical effect). In this study, we performed muon irradiation for low-pressure CO, CO2, and COS molecules and measured the muonic X-rays emitted immediately after muon capture by an atom. In this paper, we quantitatively discuss the muon capture probability of each type of atom using the LMM model.

The Development of a Non-Destructive Analysis System with Negative Muon Beam for Industrial Devices at J-PARC MUSE

Motonobu Tampo1, Kouji Hamada1, Naritoshi Kawamura1, Makoto Inagaki2, Takashi U. Ito3, Kenji M. Kojima1, Kenya M. Kubo4, Kazuhiko Ninomiya2, Patrick Strasser1, Go Yoshida2 and Yasuhiro Miyake1 1Institute of Materials Structure Science, KEK, Tokai, Ibaraki 319-1195, Japan 2Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama Toyonaka, Osaka, 560-0043 Japan 3Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki, 319-1195, Japan 4International Christian University, Mitaka, Tokyo, 181-8585, Japan

Dynamic organization of active video multicast in heterogeneous environment

In this paper, we introduce active network technologies to a video multicast system that can satisfy heterogeneous client requests in an efficient and effective way We employ active nodes that adapt incoming video streams at the users request by using transcoders or filters and then dynamically reorganize multicast sessions to accommodate clients. Simulation experiments demonstrate that our methods can appropriately split, merge, and move multicast groups to handle client-to-client heterogeneity.

Muonic atom formation processes for carbon containing molecules

Muonic atom is an atomic system which has a negative muon substituted an electron. Muonic atom formation processes are strongly influenced by the chemical environment of muon capturing atom such as molecular structure, however, the initial processes of muon capture still have not been well investigated. In this study, we performed muon irradiation for gaseous carbon containing molecules to investigate the chemical environmental effect on muon capture processes.