Total efficiency of GE detectors--dead layer signal effect

Pavel Dryak; Petr Kovar; Arunas Gudelis

doi:10.1016/j.apradiso.2009.11.026

Total efficiency of GE detectors--dead layer signal effect

Appl Radiat Isot. 2010 Jul-Aug;68(7-8):1451-3. doi: 10.1016/j.apradiso.2009.11.026. Epub 2009 Dec 11.

Authors

Pavel Dryak¹, Petr Kovar, Arunas Gudelis

Affiliation

¹ Czech Metrology Institute, Prague, Czech Republic. pdryak@cmi.cz

PMID: 20005119
DOI: 10.1016/j.apradiso.2009.11.026

Abstract

Two types of detectors (GC 4018 and BE 5030) were compared regarding the signal from the outer dead layer of the detector. Gamma-spectra of Am-241 were acquired with various delays against the starting signal from an alpha LS probe. Coincidence spectra from both detectors were different. The dead-layer signal does not increase the full-energy peak efficiency but it increases the total efficiency, as it was demonstrated by the reconstruction of Am-241 spectra for both detectors.