Inaccuracy Determination in Mathematical Model of Labsocs Efficiency Calibration Program

M. Kuznetsov, T. Nikishkin, S. Chursin

Результат исследований: Материалы для журналаСтатья

Аннотация

The study of radioactive materials quantitative inaccuracy determination caused by semiconductor detector aging is presented in the article. The study was conducted using a p- type coaxial GC 1518 detector made of a high-purity germanium produced by Canberra Company and LabSOCS mathematical efficiency calibration program. It was discovered that during 8 years of operation the efficiency of the detector had decreased due to increase of the dead layer of the germanium crystal. Increasing the thickness of the dead layer leads to 2 effects, which influence on the efficiency decrease: the shielding effect and the effect of reducing the active volume of the germanium crystal. It is found that the shielding effect contributes at energies below 88 keV. At energies above 88 keV the inaccuracy is connected with the decrease of the germanium crystal active volume, caused by lithium thermal diffusion.

Язык оригиналаАнглийский
Номер статьи012050
ЖурналIOP Conference Series: Materials Science and Engineering
Том142
Номер выпуска1
DOI
СостояниеОпубликовано - 2 сен 2016

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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