True Coincidence Summing Correction in Gamma Spectroscopy

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4.1 Introduction 48 4.2 Experimental Work 49 4.2.1 Peak-to-Total Calibration 49 4.2.2 Obtaining the Peak-to-Total (P/T) Calibration Curve 50 4.2.3 Geometry Description 51 4.2.4 CSC Factors Computation 53 4.3 Results 53 4.4 Validations and Discussion 59 Appendix A 66 References 82
Acknowledgements My recognition to the leading and all the teaching faculty of the IUP, for the inspiration and motivation I gained in perusing the course. My gratitude to Dr. Helmut Fischer for supervision and guidance, and my group members for assistance that kept me progressive throughout my thesis work. My special thanks to special friends for all the dynamic support and last but not least my family for all the upholding encouragement. i
Page 1 and 2: Universität Bremen Faculty of Envi
Page 3: 2.2 The Origin of Summing 19 2.3 Su
Page 7 and 8: List of Figures: Figure 1.1 - Compa
Page 9 and 10: List of Tables: Table 1.1 - Typical
Page 11 and 12: the photopeak area is related to el
Page 13 and 14: Figure 1.1 Comparative pulse height
Page 15 and 16: 1.4.2 Packing of the Detector HPGe
Page 17 and 18: Table 1.1 Typical FWHM values as a
Page 19 and 20: The gamma photons produce electron-
Page 21 and 22: Figure 1.7 Peak and background area
Page 23 and 24: • Absolute full-peak energy effic
Page 25 and 26: p c =1-e -2Rτ (1.6) R is the mean
Page 27 and 28: amplifier output pulses shapes are
Page 29 and 30: Figure 2.3 Simplified decay scheme
Page 31 and 32: Counts 5000 4000 3000 2000 1000 Eu-
Page 33 and 34: Figure 2.6 Ratio of count rates in
Page 35 and 36: participate in summing. However, ca
Page 37 and 38: Figure 2.8 The efficiency curve con
Page 39 and 40: The above discussion leads to the c
Page 41 and 42: The ratio n 2 /n’ 2 would be used
Page 43 and 44: • The larger Eu-152 factors for t
Page 45 and 46: As discussed in chapter 2, the emis
Page 47 and 48: ∫ ∫ ε r) ε t ( r) dV ( r) dV
Page 49 and 50: For equation (3.8); N p,g = measure
Page 51 and 52: comprehensive spectrum analysis for
Page 53 and 54: Tentative Nuclide Identification An
Page 55 and 56:
correction uses LabSOCS technology
Page 57 and 58:
4 Results, Validations and Discussi
Page 59 and 60:
assumed to be constant for detector
Page 61 and 62:
4.2.3 Geometry Description The prop
Page 63 and 64:
Table 4.4- Cascade correction facto
Page 65 and 66:
Table 4.6- Cascade correction facto
Page 67 and 68:
Figure 4.8 Comparison between the f
Page 69 and 70:
4.4 Validations and Discussion To v
Page 71 and 72:
0.900 0.850 0.800 0.750 0.700 0.650
Page 73 and 74:
The sediment sample obtained from B
Page 75 and 76:
Appendix A Detector 3: Marinelli be
Page 77 and 78:
Detector 3: Pellets (1g/cm 3 ) 5 mm
Page 79 and 80:
Nuclide Energy (keV) Detector 4: Ma
Page 81 and 82:
Nuclide Energy (keV) Detector 4: Pe
Page 83 and 84:
Detector 5: Marinelli beaker 0.5 L
Page 85 and 86:
Detector 5: Pellets (1g/cm 3 ) Nucl
Page 87 and 88:
Detector 6: Marinelli beaker Nuclid
Page 89 and 90:
Detector 6: Pellets (1g/cm 3 ) 5 mm
Page 91 and 92:
References [1] Radiation Detection
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True Coincidence Summing Correction in Gamma Spectroscopy

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