Determination of lifetimes of 6PJ levels and ground-state polarizability of Cs from the van der Waals coefficient C6

Andrei Derevianko and Sergey G. Porsev
Phys. Rev. A 65, 053403 – Published 15 April 2002
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Abstract

A method for determination of atomic lifetimes from the value of dispersion coefficient C6 of molecular potentials correlating to two ground-state atoms is proposed. The method is illustrated with atomic Cs using C6 deduced from high-resolution Feshbach spectroscopy. The following lifetimes are determined: τ6P1/2=34.80±0.07ns and τ6P3/2=30.39±0.06ns. The underlying electric-dipole matrix elements are required for a refined analysis of parity violation in 133Cs. We also obtain static polarizability of the Cs ground state, α(0)=400.49(81) atomic units. It is demonstrated that the uncertainties may be considerably reduced as the coefficient C6 is constrained further.

  • Received 11 July 2001

DOI:https://doi.org/10.1103/PhysRevA.65.053403

©2002 American Physical Society

Authors & Affiliations

Andrei Derevianko and Sergey G. Porsev*

  • Department of Physics, University of Nevada, Reno, Nevada 89557

  • *Permanent address: Petersburg Nuclear Physics Institute, Gatchina, Leningrad District, 188300, Russia.

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Vol. 65, Iss. 5 — May 2002

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