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JETP Letters

, 87:4 | Cite as

Investigation of the effect of resonant environment (Mössbauer screen) on the observed half-life of the 119m1Sn isomer (E = 23.8 keV, T 1/2 ∼ 18 ns)

  • Yu. E. Loginov
  • A. I. Egorov
  • E. I. Malyutenkov
  • S. E. Malyutenkova
  • V. V. Martynov
Fields, Particles, and Nuclei
  • 29 Downloads

Abstract

In order to analyze the effect of resonant environment on the γ decay of excited nuclei, the half-life of the 119m1Sn isomer (E = 23.8 keV, T 1/2 ∼ 18 ns), which appears from the decay of the 119m2Sn state (E = 89 keV, T 1/2 ∼ 293 d), has been measured by the e-γ coincidence method on samples consisting of the mixture of tin oxides containing the 119Sn stable nucleus and 119m2Sn radioactive nuclei with various values of the 119SnO2/119m2SnO2 ratio. For the samples, where this ratio is equal to 6.2 × 104, 1.2 × 106, 6.5 × 106, and 1.7 × 107, the half-life T 1/2is equal to 18.69(2), 18.71(2), 18.91(5), and 19.43(4) ns, respectively. For the reference sample (a metal with a 119Sn/119m2Sn ratio of 1.5 × 105), the value T 1/2 = 18.68(6) ns is obtained.

PACS numbers

21.10.Tg 23.20.Lv 76.80.+y 

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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • Yu. E. Loginov
    • 1
  • A. I. Egorov
    • 1
  • E. I. Malyutenkov
    • 1
  • S. E. Malyutenkova
    • 1
  • V. V. Martynov
    • 1
  1. 1.Petersburg Nuclear Physics InstituteRussian Academy of SciencesGatchina, Leningrad regionRussia

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