Lifetime of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>2</mn><mrow><msup><mrow><mi></mi></mrow><mrow><mn>3</mn></mrow></msup></mrow><mrow><msub><mrow><mi>P</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span> state of He-like <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>197</mn></mrow></msup></mrow><mi mathvariant="normal">Au</mi></math></span>

S. Toleikis; B. Manil; E. Berdermann; H. F. Beyer; F. Bosch; M. Czanta; R. W. Dunford; A. Gumberidze; P. Indelicato; C. Kozhuharov; D. Liesen; X. Ma; R. Marrus; P. H. Mokler; D. Schneider; A. Simionovici; Z. Stachura; T. Stöhlker; A. Warczak; Y. Zou

doi:10.1103/PhysRevA.69.022507

Lifetime of the $2^{3} P_{0}$ state of He-like $^{197} Au$

S. Toleikis, B. Manil, E. Berdermann, H. F. Beyer, F. Bosch, M. Czanta, R. W. Dunford, A. Gumberidze, P. Indelicato, C. Kozhuharov, D. Liesen, X. Ma, R. Marrus, P. H. Mokler, D. Schneider, A. Simionovici, Z. Stachura, T. Stöhlker, A. Warczak, and Y. Zou

Phys. Rev. A 69, 022507 – Published 20 February 2004

Abstract

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 $2^{3} P_{0}$ state, $τ (2^{3} P_{0}),$ of the two-electron ion $^{197} {Au}^{77 +}$ (He-like gold) with the result $τ (2^{3} P_{0}) = 22.16 (0.81)$ ps. The mechanism for the decay of this state is by a hyperfine-induced radiative transition to the $1^{1} S_{0}$ 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.

Received 4 November 2003

DOI:https://doi.org/10.1103/PhysRevA.69.022507

Authors & Affiliations

S. Toleikis^1,*, B. Manil², E. Berdermann¹, H. F. Beyer¹, F. Bosch¹, M. Czanta¹, R. W. Dunford³, A. Gumberidze¹, P. Indelicato⁴, C. Kozhuharov¹, D. Liesen¹, X. Ma¹, R. Marrus⁵, P. H. Mokler¹, D. Schneider⁶, A. Simionovici⁷, Z. Stachura⁸, T. Stöhlker¹, A. Warczak⁹, and Y. Zou¹⁰

¹Gesellschaft für Schwerionenforschung (GSI), Planckstrasse 1, D-64291 Darmstadt, Germany
²CIRIL-GANIL, rue Claude Bloch, F-14070 Caen Cedex 5, France
³Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA
⁴École Normale Supérieure et Université Pierre et Marie Curie, 4 place Jussieu, F-75252 Paris Cedex 5, France
⁵Department of Physics, University of California, Berkeley, California 94720-7300, USA
⁶Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550-9234, USA
⁷European Synchrotron Radiation Facility (ERSF), Boîte Postale 220, F-38043 Grenoble Cedex, France
⁸Institute of Nuclear Physics, ulnicka Radzikowskiego 152, 31-342 Kraków, Poland
⁹Institute of Physics, ulnicka Reymonta 4, 30-059 Kraków, Poland
¹⁰Max-Planck-Institute für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany

^*Electronic address: s.toleikis@gsi.de

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Vol. 69, Iss. 2 — February 2004

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