Measurement of the lifetime and quenching rate of metastable 2S muonic helium ions
作者： H.P. von Arb , F. Dittus , H. Heeb , H. Hofer , F. Kottmann
DOI: 10.1016/0370-2693(84)91152-3
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摘要: Abstract The lifetime of the 2S state in ( μ −4 He ) + ions has been measured at He-gas pressures between 50 Torr and 6 atm T =300 K ). We observed both X-rays from two-photon 2S→1S transitions as well delayed α associated with radiative quenching. quenching rate is strongly pressure dependent; it predominantly a quadratic function three-body coefficient k =(5.9±0.8)×10 −32 cm / s . At atm, we find τ 2 S
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