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Hyperfine Suppression of 2S133PJ3 Transitions in He3

I. A. Sulai, Qixue Wu, M. Bishof, G. W. F. Drake, Z.-T. Lu, P. Mueller, and R. Santra
Phys. Rev. Lett. 101, 173001 – Published 24 October 2008

Abstract

Two anomalously weak transitions within the 2S133PJ3 manifolds in He3 have been identified. Their transition strengths are measured to be 1000 times weaker than that of the strongest transition in the same group. This dramatic suppression of transition strengths is due to the dominance of the hyperfine interaction over the fine-structure interaction. An alternative selection rule based on IS coupling (where the nuclear spin is first coupled to the total electron spin) is proposed. This provides qualitative understanding of the transition strengths. It is shown that the small deviations from the IS coupling model are fully accounted for by an exact diagonalization of the strongly interacting states.

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  • Received 28 August 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.173001

©2008 American Physical Society

Authors & Affiliations

I. A. Sulai1,2,3, Qixue Wu4, M. Bishof1,3, G. W. F. Drake4, Z.-T. Lu1,2,3, P. Mueller1, and R. Santra2,5

  • 1Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 2Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA
  • 3The Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637, USA
  • 4Department of Physics, University of Windsor, Windsor, Ontario N9B 3P4, Canada
  • 5Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA

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Issue

Vol. 101, Iss. 17 — 24 October 2008

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