Variation of Energy Resolution with Distance for a NaI(Tl) Detector

Abstract

As the nuclear radiation has started to be used in a variety of different fields, it is important to be protected from it, and thus the radiation measurement becomes vital. The quality of the performance of a detection system, used for the energy measurements, is important. It is characterized by the width of the pulse-height distribution, obtained for the particles of the same energy (monoenergetic source). The energy spectrum of a radiation source depends on the type and energy of the incident particle and the type of the detector. In this work the energy resolution of a 3 × 3 NaI(Tl) detector has been measured for photon energies of 511, 662, 835, 1173, 1275, and 1332 keV, and its variation with the detector-source distance was investigated. The energy resolution of a detector system is obtained from the peak full width at one-half of the maximum height (FWHM) of a single peak (for a particular energy) as a function of detector-source distance. It was found that the energy resolution has decreased with the increasing distance.

X‐ray shielding parameters of lanthanum oxide added waste soda‐lime glass

“…The measurement of linear attenuation coefficients for produced four types of glass samples was done using gamma spectrometer which consists of an NaI(Tl) detector, high voltage, preamplifier, amplifier, 16,384‐channel multi‐channel analyses (MCA). [ 41–43 ] The detector was surrounded by lead metal in order to reduce the background radiation. In Figure 2, a schematic view of detector system is shown.…”