Measurement of the Initial Population and Decay Rate of the(μHe4)2 | Zendy

A. Bertin | Zendy; G. Carboni | Zendy; G. Gorini | Zendy; O. Pitzurra | Zendy; E. Polacco | Zendy; G. Torelli | Zendy; A. Vitale | Zendy; E. Zavattini | Zendy

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Measurement of the Initial Population and Decay Rate of the(μHe4)2

Author(s) -

A. Bertin,

G. Carboni,

G. Gorini,

O. Pitzurra,

E. Polacco,

G. Torelli,

A. Vitale,

E. Zavattini

Publication year - 1974

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.33.253

Subject(s) - physics , population , atomic physics , sociology , demography

The fraction ( epsilon /sub 25/) of negative muons captured by the 2S level of He atoms and the lifetime tau /sub 2S/ of the muons at this level has been observed with pure helium gas at 50 'atm' and 293K. epsilon /sub 2S/, with no Stark effect, =(4.3+or-0.6)*10/sup -2/, for max. Stark effect, =(3.5+or-0.5)*10/sup -2/ and is insignificantly pressure dependent. tau /sub 2S/=(1.43+or-0.15) mu sec. X-rays from a 2S level two-photon decay and the delayed muon decay electron were observed. (7 refs)

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