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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Number <strong>of</strong> counts1436 keVInternal radioactivityM.Sc <strong>Dissertation</strong>energy resolution 3.7 ± 0.15 % (FWHM) at 662 keV. And the spectrum shows the lowenergy peak at 32 keV due to barium K α X-ray.14000Kα X-ray peak120001000080001173.24 keVFull energy peak1332.5 keVFull energy peak60004000Backscatter peakComptoncontinuumCompton edge200000 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600Energy (KeV)Figure 4.5 Pulse height spectrum for 60 Co gamma rays source taken withLaCl 3 :Ce scintillator detector for 600 secFigure 4.5 presents the energy spectra <strong>of</strong> gamma-rays from a 60 Co source. Note avery high energy resolution <strong>of</strong> 2.78 ± 0.08 % for the 1332.5 keV peak measured withLaCl 3 :Ce crystal. In this spectrum there is an additional peak at 1436 keV due to internalradioactivity <strong>of</strong> lanthanum halide crystal. This is very useful for some other energycalibration application.K. <strong>Suren</strong> 23
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