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2005-01-01 - Article/Dans un journal avec peer-review - Anglais - 4 page(s)

Schef P., Lundin P., Biémont Emile , Källberg A., Norlin L.-O., Palmeri Patrick , Royen P., Simonsson A., Mannervik S., "Disentanglement of magnetic field mixing reveals the spontaneous M2 decay rate for a metastable level in Xe+" in Physical Review. A, 72, 2, 1-4, 020501

  • Edition : American Physical Society, College Park (MD)
  • Codes CREF : Enseignement des sciences exactes et naturelles (DI0131), Mécanique quantique classique et relativiste (DI1211)
  • Unités de recherche UMONS : Astrophysique et spectroscopie (S804)
Texte intégral :

Abstract(s) :

(Anglais) We have investigated the radiative decay of the metastable level 5d(4)D(7/2) in Xe+. Theoretically we find the decay to be heavily dominated by an M2 transition and not by M1/E2 transitions. Lifetime measurements of 5d(4)D(7/2) in a storage ring are difficult since magnetic mixing of the metastable with a short-lived level quenches its population. Decay rates were determined at different magnetic field strengths (B) in order to allow a nonlinear extrapolation to B=0. The experimental lifetime of 2.4 +/- 0.8 s was in agreement with the calculated value, but much smaller than previously estimated.

Identifiants :
  • DOI : 10.1103/PhysRevA.72.020501