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On the Active Volume of Cadmium Zinc Telluride Gamma-Ray Spectrometers

Published online by Cambridge University Press:  10 February 2011

J. C. Lund ,
B. A. Brunett ,
T. P. Viles ,
N. R. Hilton  and
R. B. James
J. C. Lund
Affiliation:
Sandia National Laboratories, Livermore, CA 94550
B. A. Brunett
Affiliation:
Sandia National Laboratories, Livermore, CA 94550 ECE Department, Carnegie Mellon University, Pittsburgh, PA 15213
T. P. Viles
Affiliation:
Sandia National Laboratories, Livermore, CA 94550 Department of Physics, University of Vermont, Burlington, VT 05405
N. R. Hilton
Affiliation:
Sandia National Laboratories, Livermore, CA 94550 Department of Physics, University of Arizona, Tucson, AZ 85724
R. B. James
Affiliation:
Sandia National Laboratories, Livermore, CA 94550
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Abstract

In this paper we develop quantitative models to predict the active volume of cadmium zinc telluride (CZT) detectors operated as gamma-ray pulse height spectrometers. Three cases are considered: a conventional planar detector, a unipolar device, and a detector in which electronic signal processing has been applied to correct for charge trapping effects. We find that existing detectors are very limited in their maximum attainable active volume, but unipolar devices with charge correction show promise for producing large active volume devices.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 487: Symposium I – Semiconductors for Room-Temperature Radiation II , 1997 , 199
Copyright
Copyright © Materials Research Society 1998

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