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Decay of 8.0-day131I to levels of131Xe and 11.77-day131mXe

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Zeitschrift für Physik

Abstract

The decay characteristics of131I have been determined with high accuracy. The total branch from131I to131mXe has been measured to be 1.086±0.007%. The half life of131mXe has been measured as 11.770±0.012 days. Theγ-ray spectrum has been determined and new transitions at 85.92, 232.17, 295.83, 302.44, and 449.57 keV established. The position, spin and parity were established for a 9/2− level at 341.140 keV and spin and parity of 7/2− established for a level at 666.921 keV. The log f1t for the unique firstforbiddenβ transition from 7/2+ 131I to 11/2− 131mXe has been calculated to be 9.78.

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Authors and Affiliations

  1. Lawrence Livermore Laboratory, Livermore, California

    R. A. Meyer & F. Momyer

  2. Chemistry Department, University of Maryland, College Park, Maryland

    W. B. Walters (Lawrence Livermore Laboratory Visitor)

Authors
  1. R. A. Meyer
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  2. F. Momyer
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  3. W. B. Walters
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Additional information

Work performed under the auspices of the U.S. Atomic Energy Commission.

Work supported in part by the U.S. Atomic Energy Commission under Contract AT(40-l)-4028.

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Meyer, R.A., Momyer, F. & Walters, W.B. Decay of 8.0-day131I to levels of131Xe and 11.77-day131mXe. Z. Physik 268, 387–390 (1974). https://doi.org/10.1007/BF01668914

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  • DOI: https://doi.org/10.1007/BF01668914

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