Shell model description of N=81 five-exciton Xe135 and the decay of I135

W. B. Walters, S. M. Lane, N. L. Smith, R. J. Nagle, and R. A. Meyer
Phys. Rev. C 26, 2273 – Published 1 November 1982
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Abstract

We have measured the spectrum of γ rays following the decay of 6.55±0.03-h I135 to levels of Xe135. These γγ-coincidence measurements have enabled us to construct a level scheme with 31 levels below 2700 keV and make a number of spin and parity assignments. The levels and their deexcitation properties are used to test a large-scale shell model calculation. In general, good agreement is found for this limiting case of the large-scale shell model code. Precise energy values and absolute intensities for the γ rays were determined for use in reactor effluent metrology.

NUCLEAR STRUCTURE Shell model calculations five exciton test case.

RADIOACTIVITY I135 fission product, radiochemical separation. Determined t12, Eγ, and Iγ. Xe135 deduced levels and Jπ values.

  • Received 5 January 1982

DOI:https://doi.org/10.1103/PhysRevC.26.2273

©1982 American Physical Society

Authors & Affiliations

W. B. Walters*, S. M. Lane, N. L. Smith, R. J. Nagle, and R. A. Meyer

  • Lawrence Livermore National Laboratory, Livermore, California 94550

  • *Permanent address: Chemistry Department, University of Maryland, College Park, MD 20742.

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Vol. 26, Iss. 5 — November 1982

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