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Physics of Particles and Nuclei

, Volume 49, Issue 4, pp 540–546 | Cite as

Results of In-Depth Analysis of Data Obtained in the Experimental Search for 2K(2ν)-Capture in 78Kr

  • Yu. M. Gavrilyuk
  • A. M. Gangapshev
  • V. V. Kazalov
  • V. V. Kuzminov
  • S. I. Panasenko
  • S. S. Ratkevich
  • D. A. Tekueva
  • S. P. Yakimenko
Article
  • 23 Downloads

Abstract

A brief description of the results of joint analysis of data obtained in long-term measurements of krypton samples differing in 78Kr content is presented. Low-background high-pressure proportional gas counters were used as detectors. The comparative analysis of experimental data on single and double K-capture provided the first estimate of the probability of production of a double K-shell vacancy in the process of K-shell electron capture in 81Kr: \({{P}_{{KK}}} = \left[ {5.7 \pm 0.8\,\,({\text{stat}}{\text{.}}) \pm 0.4\,\,({\text{syst}}{\text{.}})} \right] \times {{10}^{{ - 5}}}\). A new result for the half-life of 78Kr with respect to the 2K(2ν)-mode was also obtained: \({{T}_{{1/2}}} = \left[ {1.9_{{ - 0.7}}^{{ + 1.3}}\,\,({\text{stat}}{\text{.}}) \pm 0.3\,\,({\text{syst}}{\text{.}})} \right] \times {{10}^{{22}}}\) years (90% CL).

Notes

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • Yu. M. Gavrilyuk
    • 1
  • A. M. Gangapshev
    • 1
  • V. V. Kazalov
    • 1
  • V. V. Kuzminov
    • 1
  • S. I. Panasenko
    • 2
  • S. S. Ratkevich
    • 2
  • D. A. Tekueva
    • 1
  • S. P. Yakimenko
    • 1
  1. 1.Institute for Nuclear Research, Russian Academy of SciencesMoscowRussia
  2. 2.Karazin Kharkiv National UniversityKharkivUkraine

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