Performance of LaBr₃∶Ce/LaCl₃∶Ce Scintillation Detector in Current Mode

LaBr₃∶Ce and LaCl₃∶Ce which exhibit superior ability in detection of γ-rays have been studied extensively in recent years. The properties for both of the LaBr₃∶Ce scintillation detector and the LaCl₃∶Ce scintillation detector were studied. The relative sensitivities to incident γ-rays of different energy were obtained by calculation. The sensitivities of detectors to the ¹³⁷Cs and ⁶⁰Co sources were measured and the sensitivity ratio of γ-ray to neutron was inspected. The result shows that the LaBr₃∶Ce and LaCl₃∶Ce scintillation detectors with high sensitivities to γ-rays and good γ/n discrimination are very appropriate for measurement in the mixed field by neutrons and γ-rays.