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.
All Science Journal Classification (ASJC) codes
Grigorescu, E. L., De Felice, P., Razdolescu, A-C., & Luca, A. (2004). Low-level gamma spectrometry using beta coincidence and Compton suppression. Applied Radiation and Isotopes, 61(2-3), 191 - 195. https://doi.org/10.1016/j.apradiso.2004.03.044