Muon capture probability of carbon and oxygen for CO, CO2, and COS under low-pressure gas conditions
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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.
KeywordsNegative muon Muonic atom Muon capture Muonic X-ray EGS-5 code
This research was supported by the Grant-in-Aid for Young Scientists B (JSPS KAKENHI, Japan: Grant Number 24740279 and 26800213).
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