Excitation of the Isomeric Th229m Nuclear State via an Electronic Bridge Process in Th+229

S. G. Porsev, V. V. Flambaum, E. Peik, and Chr. Tamm
Phys. Rev. Lett. 105, 182501 – Published 25 October 2010

Abstract

We consider the excitation of the nuclear transition Th229gTh229m near 7.6 eV in singly ionized thorium via an electronic bridge process. The process relies on the excitation of the electron shell by two laser photons whose sum frequency is equal to the nuclear transition frequency. This scheme allows us to determine the nuclear transition frequency with high accuracy. Based on calculations of the electronic level structure of Th+ which combine the configuration-interaction method and many-body perturbation theory, we estimate that a nuclear excitation rate in the range of 10s1 can be obtained using conventional laser sources.

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  • Received 16 June 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.182501

© 2010 The American Physical Society

Authors & Affiliations

S. G. Porsev1,2, V. V. Flambaum1, E. Peik3, and Chr. Tamm3

  • 1School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
  • 2Petersburg Nuclear Physics Institute, Gatchina, Leningrad district, 188300, Russia
  • 3Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany

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Issue

Vol. 105, Iss. 18 — 29 October 2010

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