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Inagaki M, Ninomiya K, Nambu A, Kudo T, Terada K, Sato A, Kawashima Y, Tomono D, Shinohara A. Chemical effect on muonic atom formation through muon transfer reaction in benzene and cyclohexane samples. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2020-0112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
To investigate the chemical effect on the muon capture process through a muon transfer reaction from a muonic hydrogen atom, the formation rate of muonic carbon atoms is measured for benzene and cyclohexane molecules in liquid samples. The muon transfer rate to carbon atoms of the benzene molecule is higher than that to the carbon atoms of the cyclohexane molecule. Such a deviation has never been observed among those molecules for gas samples. This may be because the transfers occur from the excited states of muonic hydrogen atoms in the liquid system, whereas in the gas system, all the transfers occur from the 1s (ground) state of muon hydrogen atoms. The muonic hydrogen atoms in the excited states have a larger radius than those in the 1s state and are therefore considered to be affected by the steric hindrance of the molecular structure. This indicates that the excited states of muonic hydrogen atoms contribute significantly to the chemical effects on the muon transfer reaction.
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Affiliation(s)
- Makoto Inagaki
- Institute for Integrated Radiation and Nuclear Science , Kyoto University , Kumatori, Sennan , Osaka 590-0494 , Japan
- Graduate School of Science , Osaka University , Toyonaka , Osaka 560-0043 , Japan
| | - Kazuhiko Ninomiya
- Graduate School of Science , Osaka University , Toyonaka , Osaka 560-0043 , Japan
| | - Akihiro Nambu
- Graduate School of Science , Osaka University , Toyonaka , Osaka 560-0043 , Japan
| | - Takuto Kudo
- Graduate School of Science , Osaka University , Toyonaka , Osaka 560-0043 , Japan
| | - Kentaro Terada
- Graduate School of Science , Osaka University , Toyonaka , Osaka 560-0043 , Japan
| | - Akira Sato
- Graduate School of Science , Osaka University , Toyonaka , Osaka 560-0043 , Japan
| | - Yoshitaka Kawashima
- Research Center for Nuclear Physics , Osaka University , Ibaraki , Osaka 567-0047 , Japan
| | - Dai Tomono
- Research Center for Nuclear Physics , Osaka University , Ibaraki , Osaka 567-0047 , Japan
| | - Atsushi Shinohara
- Graduate School of Science , Osaka University , Toyonaka , Osaka 560-0043 , Japan
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Development of non-destructive isotopic analysis methods using muon beams and their application to the analysis of lead. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06506-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Stegeby H. Overview of antiproton affinities for functional groups relevant in particle-beam cancer therapy. Cancer Rep (Hoboken) 2018. [DOI: 10.1002/cnr2.1128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Henrik Stegeby
- Department of Chemistry-Ångström, The Theoretical Chemistry Programme; Uppsala University; Uppsala Sweden
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Ninomiya K, Kitanaka M, Shinohara A, Tampo M, Miyake Y, Sakai Y, Kubo MK. Muonic X-ray measurements on mixtures of CaO/MgO and Fe3O4/MnO. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5746-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ninomiya K, Inagaki M, Kubo MK, Nagatomo T, Higemoto W, Kawamura N, Strasser P, Shimomura K, Miyake Y, Sakamoto S, Shinohara A, Saito T. Negative muon induced elemental analysis by muonic X-ray and prompt gamma-ray measurements. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-4772-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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