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Chinese Physics C> 2014, Vol. 38> Issue(4) : 044001 DOI: 10.1088/1674-1137/38/4/044001

Evaluation of the 1077 keV γ-ray emission probability from 68Ga decay

  • 68Ga decays to the excited states of 68Zn through the electron capture decay mode. New recommended values for the emission probability of 1077 keV γ-ray given by the ENSDF and DDEP databases all use data from absolute measurements. In 2011, JIANG Li-Yang deduced a new value for 1077 keV γ-ray emission probability by measuring the 69Ga(n,2n) 68Ga reaction cross section. The new value is about 20% lower than values obtained from previous absolute measurements and evaluations. In this paper, the discrepancies among the measurements and evaluations are analyzed carefully and the new values are re-recommended. Our recommended value for the emission probability of 1077 keV γ-ray is (2.72± 0.16)%.
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HUANG Xiao-Long, JIANG Li-Yang, CHEN Xiong-Jun and CHEN Guo-Chang. Evaluation of the 1077 keV γ-ray emission probability from 68Ga decay[J]. Chinese Physics C, 2014, 38(4): 044001. doi: 10.1088/1674-1137/38/4/044001
HUANG Xiao-Long, JIANG Li-Yang, CHEN Xiong-Jun and CHEN Guo-Chang. Evaluation of the 1077 keV γ-ray emission probability from 68Ga decay[J]. Chinese Physics C, 2014, 38(4): 044001.  doi: 10.1088/1674-1137/38/4/044001 shu
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Received: 2013-05-22
Revised: 2013-12-09
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Evaluation of the 1077 keV γ-ray emission probability from 68Ga decay

    Corresponding author: HUANG Xiao-Long,
  • Received Date: 2013-05-22
  • Accepted Date: 2013-12-09
  • Available Online: 2014-04-05

Abstract: 68Ga decays to the excited states of 68Zn through the electron capture decay mode. New recommended values for the emission probability of 1077 keV γ-ray given by the ENSDF and DDEP databases all use data from absolute measurements. In 2011, JIANG Li-Yang deduced a new value for 1077 keV γ-ray emission probability by measuring the 69Ga(n,2n) 68Ga reaction cross section. The new value is about 20% lower than values obtained from previous absolute measurements and evaluations. In this paper, the discrepancies among the measurements and evaluations are analyzed carefully and the new values are re-recommended. Our recommended value for the emission probability of 1077 keV γ-ray is (2.72± 0.16)%.

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