The calibration characteristics of the gamma-channel of phoswich detectors of different models

Analytical expression to calculate total and full-energy peak efficiencies for cylindrical phoswich and lanthanum bromide scintillation detectors

“…Will start first with the phoswich detector, it consists of two or more scintillation detectors optically coupled as a phosphor sandwich, from which the scintillation light output is viewed by a single photomultiplier tube (PMT) (L'Annunziata, 2003). Much current research is directed to the development of phoswich detectors as practical instruments for the simultaneous measurement and discrimination of alpha, beta, gamma, or neutron radiation (de Celis et al, 2007;Farsoni and Hamby, 2007;Mayhugh et al, 1977;Heath et al, 1979;Usuda et al, 1997Usuda et al, , 1998Wissink et al, 1997;White and Miller, 1999;Childress and Miller, 2002;Gawlikowicz et al, 2002;Yamasoto et al, 2005;Ely et al, 2005;Anshakov et al, 2006;Yalcin et al, 2007Yalcin et al, , 2009. As for the second type of detectors (lanthanum bromide scintillation detector), the cerium-doped lanthanum halide crystals have gained special interest due to their high density and atomic number, which results in excellent scintillation properties and higher detection efficiencies in comparison to NaI(Tl) (Van Loef et al, 2002;Menge et al, 2007;Glodo et al, 2005;Quarati et al, 2007;Moses, 2002;Nicolini et al 2007;Kumar et al, 2009aKumar et al, , 2009b.…”