First observation of radiative photons associated with the μ- transfer process from (tμ-) to 3He through an intermediate (t3He μ-) mesomolecule

T. Matsuzaki, K. Nagamine, K. Ishida, N. Kawamura, S. N. Nakamura, Y. Matsuda, M. Tanase, M. Kato, K. Kurosawa, H. Sugai, K. Kudo, N. Takeda, G. H. Eaton

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6 Citations (Scopus)


For the first time, we have observed the 6.76 keV radiative transition photons associated with the μ- transfer process from (tμ-) atoms to 3He nuclei through intermediate (t3He μ-) mesomolecule formation in a solid T2 target. The radiative decay branching ratio of the (t3He μ-) mesomolecule and the muon transfer rate were determined and compared with theoretical values. We also studied an accumulation process of 3He atoms in a solid T2 target by observing the neutron decay rates originating from t-t muon-catalyzed fusions. Their time dependence indicates a sudden 3He bubble formation in the solid T2 at an atomic concentration of 130 ppm.

Original languageEnglish
Pages (from-to)43-49
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
Publication statusPublished - 2002


  • He bubble formation in solid T
  • Mesomolecule formation
  • Muon transfer
  • Muon-catalyzed fusion
  • Radiative transition photon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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