title: Efficiency measurement and Monte Carlo simulations of a CeBr3scintillator.
abstract: CeBr3crystals meet many of the demands of high performance scintillators, due to their excellent timing properties, good effective Z and high photon yield. It is important to characterize their efficiency and to verify whether modern Monte Carlo codes are reliable enough to reproduced the observed values. We report here on the measurement of both total and photopeak efficiency of a 1" diameter×1" height CeBr3crystal for gamma-ray energies up to 1.4MeV at several distances, using a variety of low energy gamma rays sources. The measured experimental efficiencies are compared with simulations developed in the framework of PENELOPE and GEANT4.
authors.affiliation: Grupo de Física Nuclear, Facultad de CC. Físicas, Universidad Complutense, 28040 Madrid, Spain; Departamento de Física, Universidad Nacional de Costa Rica, Heredia, Costa Rica.
authors.forename: E
authors.initials: E
authors.lastname: Picado
authors.affiliation: Grupo de Física Nuclear, Facultad de CC. Físicas, Universidad Complutense, 28040 Madrid, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Carmona-Gallardo
authors.affiliation: Grupo de Física Nuclear, Facultad de CC. Físicas, Universidad Complutense, 28040 Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Cal-González
authors.affiliation: Grupo de Física Nuclear, Facultad de CC. Físicas, Universidad Complutense, 28040 Madrid, Spain. Electronic address: lmfraile@ucm.es.
authors.forename: L M
authors.initials: LM
authors.lastname: Fraile
authors.affiliation: Grupo de Física Nuclear, Facultad de CC. Físicas, Universidad Complutense, 28040 Madrid, Spain; National Centre for Nuclear Research, Division for Nuclear Physics, BP1, Warsaw, Poland.
authors.forename: H
authors.initials: H
authors.lastname: Mach
authors.affiliation: Grupo de Física Nuclear, Facultad de CC. Físicas, Universidad Complutense, 28040 Madrid, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Udías
authors.affiliation: Grupo de Física Nuclear, Facultad de CC. Físicas, Universidad Complutense, 28040 Madrid, Spain.
authors.forename: V
authors.initials: V
authors.lastname: Vedia
keywords: CeBr(3); Experimental efficiency; GEANT4 simulation; Inorganic scintillators; Monte Carlo; PENELOPE simulation