Single crystal HPGe (80%) versus BGO shielded CLOVER detector for high precision decay rate measurements: a comparative study

  • S. Pathak
  • P. DasEmail author
  • A. K. Sikdar
  • J. Nandi
  • S. Bhattacharyya
  • T. Bhattacharjee
  • Soumik Bhattacharya
  • S. S. Alam
  • A. Ray


In this study, various detector configurations have been investigated in order to explore the optimal condition for decay rate measurements of radioactive samples using gamma spectroscopy technique. A limitation of detecting low energy gamma rays from decaying radioactive nuclei, is the Compton background which can be significantly reduced by rejecting Compton scattered events through active Bismuth germanate (BGO) shielding. On the other hand, for a CLOVER detector without BGO shielding, one can place the radioactive samples very close to the detector for enhancing geometrical efficiency. A single crystal High Purity Germanium (HPGe) detector can also be used for decay rate measurements. In order to measure the decay rate of nuclei decaying via gamma emission with reasonable intensity, optimal close geometry options have been investigated for various HPGe detector configurations.


CLOVER detector HPGe detector γ-Detection efficiency BGO shielding 



Amlan Ray acknowledges financial assistance from Science and Engineering Research Board, Government of India, Grant No. EMR/2016/001914. Mr S. Pathak and S. S. Alam thanks Department of Atomic Energy for financial support for carrying this experimental work.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Experimental Nuclear Physics DivisionVariable Energy Cyclotron CentreKolkataIndia
  2. 2.Homi Bhabha National InstituteMumbaiIndia

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