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Collinear laser-beam--ion-beam measurement of the mean lifetime of the Ar II 4[ital p][prime] [sup 2][ital F][degree][sub 7/2] level

Journal Article · · Physical Review A; (United States)
;  [1]
  1. Physics Department, Texas A M University, College Station, Texas 77843 (United States)
The mean lifetime [tau] of the 4[ital p][prime] [sup 2][ital F][degree][sub 7/2] level of Ar II has been measured using a variant of the collinear laser-beam--fast-ion-beam spectroscopy technique. Our variant requires no mechanical motion or laser frequency tuning. The result is [tau]=8.414[plus minus]0.025 ns in agreement with an earlier, comparably precise, measurement based on a crossed laser--ion-beam technique. The result lies above all theoretical calculations.
OSTI ID:
6942077
Journal Information:
Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 47:1; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English