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Physics of Atomic Nuclei

, Volume 69, Issue 4, pp 571–580 | Cite as

Resonance conversion as a dominant decay mode for the 3.5-eV isomer in 229mTh

  • F. F. Karpeshin
  • M. B. Trzhaskovskaya
Nuclei Theory

Abstract

on the basis of calculations performed withi nthe relativistic multiconfiguration Dirac-Fock method, it is shown that the probability of the decay of the 3.5-eV nuclear level in the 229mTh isomer via resonance conversion exceeds the probability of its direct radiative decay by at least a factor of about 600. The possibility of experimentally observing delayed soft photons or alpha particles in the decay of this isomer is discussed.

PACS numbers

23.20.Nx 27.90.+b 21.10.Tg 

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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • F. F. Karpeshin
    • 1
  • M. B. Trzhaskovskaya
    • 2
  1. 1.Institute of PhysicsSt. Petersburg State UniversitySt. PetersburgRussia
  2. 2.Petersburg Nuclear Physics InstituteRussian Academy of SciencesGatchinaRussia

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