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KMID : 0371819970290060451
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Nuclear Engineering and Technology
1997 Volume.29 No. 6 p.451 ~ p.458
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Signal Shapes from a Closed-ended Coaxial HPGe Detector
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Choi H.D.
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Abstract
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Signal shapes from a closed-ended coaxial HPGe detector are investigated by numerical methods. The detector used in this study has a volume of 72 cm3 with relative efficiency of 15%. The electric field and potential distributions in the detector are determined by solving the Poisson equation at the depletion and operating bias. Hence the time dependent signal shapes induced on the electrode are obtained from the energy balance consideration and by solving the equation of motion for the charge carriers. For various initial positions of a charge carrier pair, the collection times of induced charge vary in the range of 70 - 404 nsec.
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