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High Efficiency, Spectroscopic CZT Array

Published online by Cambridge University Press:  10 February 2011

L. Cirignano ,
M. Klugerman ,
Y. Dmitriyev ,
P. Bennett ,
K. S. Shah ,
P. Bloser ,
T. Narita  and
J. Grindlay
L. Cirignano
Affiliation:
RMD Inc., 44 Hunt Street, Watertown, MA 02172
M. Klugerman
Affiliation:
RMD Inc., 44 Hunt Street, Watertown, MA 02172
Y. Dmitriyev
Affiliation:
RMD Inc., 44 Hunt Street, Watertown, MA 02172
P. Bennett
Affiliation:
RMD Inc., 44 Hunt Street, Watertown, MA 02172
K. S. Shah
Affiliation:
RMD Inc., 44 Hunt Street, Watertown, MA 02172
P. Bloser
Affiliation:
RMD Inc., 44 Hunt Street, Watertown, MA 02172
T. Narita
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138
J. Grindlay
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138
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Abstract

Compact, efficient, spectroscopic detector arrays which preferably operate without cooling have applications in the fields of x-ray astronomy, nuclear medicine and radioactive materials management. We have fabricated a 16 element CdZnTe detector array that provides a stopping efficiency of greater than 80%, a photopeak fraction of 44% and an energy resolution of 3.2 keV FWHM at 122 keV. The 4 × 4 array uses a pixel size of(1.5 mm)2 with 0.2 mm spacing on a 5 mm thick substrate. The variation in spectroscopic properties amongst pixels has been characterized in terms of energy resolution and detection efficiency. Operation in current (or flux) mode for transmission imaging has also been investigated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 487: Symposium I – Semiconductors for Room-Temperature Radiation II , 1997 , 205
Copyright
Copyright © Materials Research Society 1998

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