Development of a Cerium bromide gamma ray spectrometer for space applications

Characterisation of a small volume (1′′ × 1′′) CeBr3 crystal for γ-ray measurements up to 4.4 MeV

“…In comparison Guss et al have reported a better resolution of 4.05% for a 0.5 × 0.5 crystal and 5.56% for a bigger crystal of dimensions 1 × 1 [5]. In recent time Panda et al have reported better energy resolution of 3.9% for a crystal of 1 × 1 dimensions [6]. The apparent variations in energy resolution by different authors can be ascribed to the obvious dependence of resolution on volume of the crystals and selection of the PMT and operating voltages.…”

“…Since Actinium and Cerium cannot be separated chemically, 227 Ac and its daughters, contribute to the internal activity. The alpha emitters, like, 227 Th, 223 [6,12,17,18]. In our measurements, we have tried to estimate the internal activity of the 1 × 1 CeBr 3 crystal by comparing the spectra recorded by the shielded and unshielded detector.…”

Crystal growth, optical properties, and scintillation responses of Pr-doped CeBr3 single crystals

“…6,[13][14][15][16][17][18][19] In these halide scintillators, a CeBr 3 single crystal with a hexagonal crystal structure (space group: P6 3 =m) shows a relatively high light yield (>60,000 photons=MeV) and a short decay time (∼19 ns) under γ-ray irradiation in addition to an excellent energy resolution (<4%). [20][21][22][23][24][25][26][27] The CeBr 3 single crystal is one of the most appropriate candidates as a scintillator for positron annihilation lifetime spectroscopy (PALS) 27) and time-of-flight positron emission tomography (TOF-PET) 28) owing to the high spatial and timing resolutions. The nonproportionality of the CeBr 3 single crystal under γ-ray irradiation was improved by divalent cation doping in a previous study.…”