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Investigation of the Internal Electric Field in Cadmium Zinc Telluride Detectors Using the Pockels Effect and the Analysis of Charge TransientsThe Pockels electro-optic effect can be used to investigate the internal electric field in cadmium zinc telluride (CZT) single crystals that are used to fabricate room temperature x and gamma radiation detectors. An agreement is found between the electric field mapping obtained from Pockels effect images and the measurements of charge transients generated by alpha particles. The Pockels effect images of a CZT detector along two mutually perpendicular directions are used to optimize the detector response in a dual anode configuration, a device in which the symmetry of the internal electric field with respect to the anode strips is of critical importance. The Pockels effect is also used to map the electric field in a CZT detector with dual anodes and an attempt is made to find a correlation with the simulated electric potential in such detectors. Finally, the stress-induced birefringence effects seen in the Pockels images are presented and discussed.
Document ID
20100023301
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Groza, Michael
(Fisk Univ. Nashville, TN, United States)
Krawczynski, Henic
(Washington Univ. Saint Louis, MO, United States)
Garson, Alfred, III
(Washington Univ. Saint Louis, MO, United States)
Martin, Jerrad W.
(Washington Univ. Saint Louis, MO, United States)
Lee, Kuen
(Washington Univ. Saint Louis, MO, United States)
Li, Qiang
(Washington Univ. Saint Louis, MO, United States)
Beilicke, Matthias
(Washington Univ. Saint Louis, MO, United States)
Cui, Yunlong
(Fisk Univ. Nashville, TN, United States)
Buliga, Vladimir
(Fisk Univ. Nashville, TN, United States)
Guo, Mingsheng
(Fisk Univ. Nashville, TN, United States)
Coca, Constantine
(Fisk Univ. Nashville, TN, United States)
Burger, Arnold
(Fisk Univ. Nashville, TN, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2010
Publication Information
Publication: Journal of Applied Physics
Volume: 107
Issue: 2
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: DHS-2007-DN077-Er0002-02
CONTRACT_GRANT: NSF-0420516
Distribution Limits
Public
Copyright
Other

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