Lecture25 - ENU 4612C/5615C Nuclear Radiation Detection and...

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ENU 4612C/5615C Nuclear Radiation Detection and Instrumentation Lecture 25 Semiconductor Detectors (4)
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Ge Detector Pulse Shape resolution energy good for needed time shaping electronic Minimum - ts measuremen timing of Accuracy - : Influences shape pulse variable to lead positions n interactio Different ns) 100 ~ mm (10 time collection charge longer to lead distances Larger
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Ge Detector Pulse Shape Derivation y velocit drift saturated reach holes and electrons Both region intrinsic within everywhere exists field electric Full ignored detraping" " and Trapping point one at created pairs h - e pulse, each For : shape pulse deriving in made s Assumption
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Pulse Shape – Planar Detector COLLECTED ELECTRONS COLLECTED HOLES Q(t) 0 q elec hole h t e t TIME layer n + layer p +
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Pulse Shape – Coaxial Detector 0 q Q(t) TIME layer n + core p +
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Typical Ge Detector – Cryostat crystal vacuum crystal Ge dewar finger cold nytrogen liquid
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Energy Resolution : ray gamma tic monoenerge
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This note was uploaded on 12/10/2011 for the course ENU 4612c taught by Professor Ghita during the Fall '11 term at University of Florida.

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Lecture25 - ENU 4612C/5615C Nuclear Radiation Detection and...

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