Phys. Rev. A 69, 022507 (2004) [5 pages]Lifetime of the 23P0 state of He-like 197AuReceived 4 November 2003; published 20 February 2004 An experiment has been performed at the Gesellschaft für Schwerionenforschung accelerator facility using a beam-foil time-of-flight technique with a newly developed chemical vapor deposition diamond particle detector to measure the lifetime of the 23P0 state, τ(23P0), of the two-electron ion 197Au77+ (He-like gold) with the result τ(23P0)=22.16(0.81) ps. The mechanism for the decay of this state is by a hyperfine-induced radiative transition to the 11S0 ground state (hyperfine quenching). The lifetime is therefore determined by a number of fundamental atomic and nuclear parameters not normally involved in radiative decay of allowed transitions. The experimental result is compared to several theoretical calculations. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.022507
DOI:
10.1103/PhysRevA.69.022507
PACS:
32.10.Fn, 21.10.Ky, 32.30.Rj, 32.70.Cs
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