Hyperfine quenching and measurement of the 2 <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="italic">P</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math>–2 <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="italic">P</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></math> fine-structure splitting in heliumlike silver (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Ag</mi></mrow><mrow><mn>4</mn><mn>5</mn><mo>+</mo></mrow></msup></mrow></math>)

Bruce B. Birkett; Jean-Pierre Briand; Pierre Charles; Daniel D. Dietrich; Keith Finlayson; Paul Indelicato; Dieter Liesen; Richard Marrus; Alexandre Simionovici

doi:10.1103/PhysRevA.47.R2454

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Hyperfine quenching and measurement of the 2 ${}^{3}$ $P_{0}$ –2 ${}^{3}$ $P_{1}$ fine-structure splitting in heliumlike silver ( ${Ag}^{45 +}$ )

Bruce B. Birkett, Jean-Pierre Briand, Pierre Charles, Daniel D. Dietrich, Keith Finlayson, Paul Indelicato, Dieter Liesen, Richard Marrus, and Alexandre Simionovici

Phys. Rev. A 47, R2454(R) – Published 1 April 1993

Abstract

The hyperfine-quenched transition 2 ${}^{3}$ $P_{0 -}$ 1 ${}^{1}$ $S_{0}$ has been observed in heliumlike silver ( ${Ag}^{45 +}$ ) in the two isotopes ${}^{107}{Ag}$ and ${}^{109}{Ag}$ . The lifetime for the transition has been measured for each isotope and found to be $τ_{0}$ (107)=3.98(37)× $10^{- 12}$ sec and $τ_{0}$ (109)=2.84(32)× $10^{- 12}$ sec. From the measured lifetimes a value is inferred for the absolute value of the 2 ${}^{3}$ $P_{0 -}$ 2 ${}^{3}$ $P_{1}$ fine-structure splitting ‖Δ $E_{0 - 1}$ ‖ in ${Ag}^{45 +}$ with the result ‖Δ $E_{0 - 1}$ ‖=0.79(04) eV, where the uncertainty is the experimental uncertainty taken at the 1σ confidence level. This result is compared with calculations based on the multiconfigurational Dirac-Fock method, the unified method, and recent results from the relativistic configuration-interaction method.

Received 28 September 1992

DOI:https://doi.org/10.1103/PhysRevA.47.R2454

Authors & Affiliations

Bruce B. Birkett

Department of Physics, University of California, Berkeley, California 94720

Jean-Pierre Briand and Pierre Charles

Laboratoire de Physique Atomique et Nucléaire (LPAN), Institut de Radium, Université Pierre et Marie Curie, T12, Boîte 93, 75252 Paris, CEDEX 05, France

Daniel D. Dietrich

Lawrence Livermore National Laboratory, L-296, P.O. Box 808, Livermore, California 94550

Keith Finlayson

Gesellschaft für Schwerionenforschung m.b.H., 6100 Darmstadt, Germany

Paul Indelicato

Laboratoire de Physique Atomique et Nucléaire (LPAN), Institut de Radium, Université Pierre et Marie Curie, T12, Boîte 93, 75252 Paris, CEDEX 05, France

Dieter Liesen

Gesellschaft für Schwerionenforschung m.b.H., 6100 Darmstadt, Germany

Richard Marrus

Department of Physics, University of California, Berkeley, California 94720

Alexandre Simionovici

Laboratoire Grenoblois de Recherches sur les Ions, les Plasmas et la Physique Atomique (LAGRIPPA), Centre d’Etudes Nucléaires de Grenoble, B.P. 85X, 38041 Grenoble CEDEX, France

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Vol. 47, Iss. 4 — April 1993

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