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The European Physical Journal A

, Volume 33, Issue 2, pp 213–221 | Cite as

The modified decay width of the radioactive nucleus

  • Il-Tong Cheon
Regular Article - Theoretical Physics

Abstract.

It is reported that the width of the first excited state ( \( {\frac{{7^+}}{{2}}}\) , 37.133keV) of 121 51Sb embedded in a ZnSb alloy can be modified by reabsorption of γ -rays scattered backward on the platinum (gold) reflector. Its dependence on the reflector shape is also investigated. The decay rate is reduced about 4.5% at a temperature of 4.2K by a platinum spherical reflector of 5mm radius.

PACS.

21.10.Tg Lifetimes 23.20.Lv γ transitions and level energies 25.20.Dc Photon absorption and scattering 27.60.+j 90 ⩽ A ⩽ 149  

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • Il-Tong Cheon
    • 1
  1. 1.The Korean Academy of Science and TechnologyBundang-gu, Seongnam-shi, Gyunggi-doKorea

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