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Proceedings Paper

Comments on Ramo's theorem
Author(s): Louis-Andre Hamel; Manuel Julien
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Paper Abstract

Ramo's theorem provides a convenient way of simulating the currents induced on the electrodes of a radiation detector by the movement of charge carriers. The concept of weighting potential or of weighting field is the key ingredient in the calculation of the induced currents. The effect of the space charge present in the detector on the weighting potentials is discussed. Three types of space charge are considered and are shown to have different effects on the induced currents. These are 1) the polarization space charge, 2) a fixed volume space charge and 3) the charge stored in the depletion layer of a semiconductor detector. A new definition of the weighting potential is proposed that is valid for all situations.

Paper Details

Date Published: 18 December 2001
PDF: 9 pages
Proc. SPIE 4507, Hard X-Ray and Gamma-Ray Detector Physics III, (18 December 2001); doi: 10.1117/12.450766
Show Author Affiliations
Louis-Andre Hamel, Univ. de Montreal (Canada)
Manuel Julien, Univ. de Montreal (Canada)

Published in SPIE Proceedings Vol. 4507:
Hard X-Ray and Gamma-Ray Detector Physics III
Ralph B. James, Editor(s)

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