Total efficiency of GE detectors--dead layer signal effect.
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.
Dryak
Pavel
P
Czech Metrology Institute, Prague, Czech Republic. pdryak@cmi.cz
Kovar
Petr
P
Gudelis
Arunas
A