Low-level gamma spectrometry using beta coincidence and Compton suppression

E.L. Grigorescu, P. De Felice, Anamaria-Cristina Razdolescu, A. Luca

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A low-level gamma-ray spectrometry system was developed using a Ge(Li) detector with 6% relative efficiency coupled to a 2π beta plastic detector for coincidence selection and a massive NaI(Tl) detector for Compton suppression. The integral background count rate for (50-1500)keV was 0.5s-1kg-1(Ge), using only beta coincidences. With Compton suppression, a value of 0.25s-1kg-1(Ge) was obtained. Spectra with and without Compton suppression were studied for60Co,137Cs and152Eu point sources. Considerations are made concerning the Compton suppression advantages in different situations. © 2004 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)191 - 195
Number of pages5
JournalApplied Radiation and Isotopes
Issue number2-3
Publication statusPublished - Aug 2004
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Radiation

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