Untitled

Muonic Atom Formation by Muon Transfer Process in C6H6or C6H12and CCl4Mixtures

“…In our previous study, nevertheless, we observed the chemical effect on the transfer process in a pionic atom [6][7][8][9]. We investigated the pion capture ratio in the liquid mixtures of C 6 H 6 or C 6 H 12 and CCl 4 and found that the pion transfer rate for the carbon atoms of C 6 H 6 was twice as high as the rate for the carbon atoms of C 6 H 12 .…”

“…We investigated the pion capture ratio in the liquid mixtures of C 6 H 6 or C 6 H 12 and CCl 4 and found that the pion transfer rate for the carbon atoms of C 6 H 6 was twice as high as the rate for the carbon atoms of C 6 H 12 . Such a chemical effect is considered to be attributed to the difference in steric hindrance of the hydrogen atoms between the C 6 H 6 and C 6 H 12 molecules [9]. The pion transfer process originates only from pionic hydrogen atoms of excited states, because pionic hydrogen atoms of the ground state have an extremely short lifetime (~10 −15 s) due to the strong interaction with the nucleus.…”

“…Thus, the pion transfer process is affected by the pionic hydrogen atoms of the excited states with a large radius. As a result, the pionic hydrogen atoms approaching the carbon atoms are hindered by the hydrogen atoms bonded to carbon atoms [9].…”

Muon Transfer Rates from Muonic Hydrogen Atoms to Gaseous Benzene and Cyclohexane

“…Muon transfer processes for hydrogen gas mixtures and other gaseous compounds under various pressure conditions were observed and the following muon de-excitation processes were examined. 15 The pressure dependence on muonic X-ray intensity patterns (X-ray structures) has already been reported, however, it is not clear whether such a dependence is due to a chemical effect from the muon transfer process or the difference in the muon cascading process after muon transfer by electron refilling. In condensed substances, Shinohara et al 12 reported a chemical effect for the pion transfer process between benzene and cyclohexane with carbon tetrachloride mixture.…”

Chemical Environmental Effects on Muon Transfer Process in Low Pressure Mixture Gases; H₂+CO and H₂+CO₂

“…reported. 4,5) There have been many studies of the muon capture process; however, the details of the chemical effect have still not been fully investigated.…”