Renormalized proton- neutron QRPA and double beta decay of 82Se to excited states in 82Kr View Full Text


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Article Info

DATE

1997-09

AUTHORS

J. Suhonen, J. Toivanen, A. S. Barabash, I. A. Vanushin, V. I. Umatov, R. Gurriarán, F. Hubert, Ph. Hubert

ABSTRACT

We apply the self-consistent renormalized proton-neutron QRPA (RQRPA) method to calculate the two-neutrino double beta (2νββ) decay matrix elements associated with the ground-state and excited-state transitions of the 82Se → 82Kr decay. The RQRPA method is an extension of the pnQRPA method and promotes the Pauli exclusion principle violated by the pnQRPA ground state and yields more stable nuclear matrix elements with increasing strength of the proton-neutron interaction. In the present work the RQRPA wave functions are also used to evaluate 2νββ-decay rates to excited final states. The resulting theoretical half lives are compared with the new stringent experimental limits obtained by using a HPGe detector and external sources of enriched selenium. More... »

PAGES

297-301

References to SciGraph publications

  • 1991-12. A comparative study of double beta decay by shell model and quasiparticle RPA in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1980. The Nuclear Many-Body Problem in NONE
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s002180050333

    DOI

    http://dx.doi.org/10.1007/s002180050333

    DIMENSIONS

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