Analytical method for calculating the efficiency and solid angle of an NaI(Tl) detector.

An approach for calculating the detection efficiency of gamma-ray detectors, based on the calculation of the influx/outflux balance of the photons through the detector, is presented. This method can be applied to several simple geometrical configurations. The method is also used to estimate the solid angle of a detector.

Thick activation detectors for neutron spectrometry using different unfolding methods: sensitivity analysis and dose calculation.

This paper discusses the use of threshold detectors of extended sizes for low intensity neutron fields' characterization. The detectors were tested by the measurement of the neutron spectrum of an (241)Am-Be source. Integral quantities characterizing the neutron field, required for radiological protection, have been derived by unfolding the measured data.