Suren Kandasamy Dissertation.pdf - University of Surrey
Suren Kandasamy Dissertation.pdf - University of Surrey
Suren Kandasamy Dissertation.pdf - University of Surrey
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M.Sc <strong>Dissertation</strong>Chapter 5ConclusionsIn this project aim to investigate the characterisation <strong>of</strong> new scintillatorLaCl 3 :Ce(10%) with the size <strong>of</strong> 44.450.8mmBrilLanCe B350 detector for gammarayspectroscopy. The characterisation involved recording spectrum, calibration(linearity), measurement <strong>of</strong> energy resolution, detection efficiency, self counting andtiming properties. The calibration <strong>of</strong> systems showed a linear dependence <strong>of</strong> theincident photon and the MCA channels. LaCl 3 :Ce(10%) BrilLanCe B350 detector hasexcellent energy resolution, especially above 200 keV. The energy resolution <strong>of</strong>LaCl 3 :Ce(10%) with the size <strong>of</strong> 44.450.8mm, was measured for the 662 keV peakis 3.70 ± 0.15 % (FWHM) at room temperature. This is very good agreement withmanufactured values [5]. Unfortunately, the lanthanum halide crystal has fewdrawbacks <strong>of</strong> their internal radioactivity and worst energy resolution for low energies(below 200 keV). But these drawbacks are likely to be serious only for a specificapplication such as long time measurement, low energy and low activity measurements.Time resolution <strong>of</strong> LaCl 3 :Ce(10%) was measured as 876.0 ps.K. <strong>Suren</strong> 33
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