Proton Radioactivity from Highly Deformed Nuclei

C. N. Davids, P. J. Woods, D. Seweryniak, A. A. Sonzogni, J. C. Batchelder, C. R. Bingham, T. Davinson, D. J. Henderson, R. J. Irvine, G. L. Poli, J. Uusitalo, and W. B. Walters
Phys. Rev. Lett. 80, 1849 – Published 2 March 1998
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Abstract

Proton radioactivity from 141Ho and 131Eu has been identified. The 141Ho proton transition has an energy Ep=1169(8)keV, a half-life t1/2=4.2(4)ms, and is assigned to the decay of the 7/2[523] Nilsson state. The 131Eu transition has an energy Ep=950(8)keV and a half-life of 26(6) ms, consistent with decay from either the 3/2+[411] or 5/2+[413] Nilsson orbital. The proton decay rates deviate significantly from calculations assuming spherical configurations, and thus indicate the onset of large deformations in the region of the proton drip line below Z=69.

  • Received 19 November 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.1849

©1998 American Physical Society

Authors & Affiliations

C. N. Davids1, P. J. Woods2, D. Seweryniak1,3, A. A. Sonzogni1, J. C. Batchelder4, C. R. Bingham5, T. Davinson2, D. J. Henderson1, R. J. Irvine2, G. L. Poli6, J. Uusitalo1, and W. B. Walters3

  • 1Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
  • 2University of Edinburgh, Edinburgh, EH9 3JZ, United Kingdom
  • 3Department of Chemistry, University of Maryland, College Park, Maryland 20742
  • 4UNIRIB, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831
  • 5Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
  • 6Istituto Fisica Generale Applicata, University of Milano, I-20133 Milano, Italy

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Vol. 80, Iss. 9 — 2 March 1998

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