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Title: Low-cost cadmium zinc telluride radiation detectors based on electron-transport-only designs

Abstract

The goal of this project was to utilize a novel device design to build a compact, high resolution, room temperature operated semiconductor gamma ray sensor. This sensor was constructed from a cadmium zinc telluride (CZT) crystal. It was able to both detect total radiation intensity and perform spectroscopy on the detected radiation. CZT detectors produced today have excellent electron charge carrier collection, but suffer from poor hole collection. For conventional gamma-ray spectrometers, both the electrons and holes must be collected with high efficiency to preserve energy resolution. The requirement to collect the hole carriers, which have relatively low lifetimes, limits the efficiency and performance of existing experimental devices. By implementing novel device designs such that the devices rely only on the electron signal for energy information, the sensitivity of the sensors for detecting radiation can be increased substantially. In this report the authors describe a project to develop a new type of electron-only CZT detector. They report on their successful efforts to design, implement and test these new radiation detectors. In addition to the design and construction of the sensors the authors also report, in considerable detail, on the electrical characteristics of the CZT crystals used to make their detectors.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
751018
Report Number(s):
SAND99-8215
TRN: US0003468
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jan 1999
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; AMBIENT TEMPERATURE; SEMICONDUCTOR DETECTORS; CADMIUM TELLURIDES; ZINC TELLURIDES; GAMMA SPECTROMETERS; ENERGY RESOLUTION; DESIGN; SENSITIVITY; ELECTRICAL PROPERTIES

Citation Formats

B. A. Brunett, J. C. Lund, J. M. Van Scyoc, N. R. Hilton, E. Y. Lee, and R. B. James. Low-cost cadmium zinc telluride radiation detectors based on electron-transport-only designs. United States: N. p., 1999. Web. doi:10.2172/751018.
B. A. Brunett, J. C. Lund, J. M. Van Scyoc, N. R. Hilton, E. Y. Lee, & R. B. James. Low-cost cadmium zinc telluride radiation detectors based on electron-transport-only designs. United States. doi:10.2172/751018.
B. A. Brunett, J. C. Lund, J. M. Van Scyoc, N. R. Hilton, E. Y. Lee, and R. B. James. Fri . "Low-cost cadmium zinc telluride radiation detectors based on electron-transport-only designs". United States. doi:10.2172/751018. https://www.osti.gov/servlets/purl/751018.
@article{osti_751018,
title = {Low-cost cadmium zinc telluride radiation detectors based on electron-transport-only designs},
author = {B. A. Brunett and J. C. Lund and J. M. Van Scyoc and N. R. Hilton and E. Y. Lee and R. B. James},
abstractNote = {The goal of this project was to utilize a novel device design to build a compact, high resolution, room temperature operated semiconductor gamma ray sensor. This sensor was constructed from a cadmium zinc telluride (CZT) crystal. It was able to both detect total radiation intensity and perform spectroscopy on the detected radiation. CZT detectors produced today have excellent electron charge carrier collection, but suffer from poor hole collection. For conventional gamma-ray spectrometers, both the electrons and holes must be collected with high efficiency to preserve energy resolution. The requirement to collect the hole carriers, which have relatively low lifetimes, limits the efficiency and performance of existing experimental devices. By implementing novel device designs such that the devices rely only on the electron signal for energy information, the sensitivity of the sensors for detecting radiation can be increased substantially. In this report the authors describe a project to develop a new type of electron-only CZT detector. They report on their successful efforts to design, implement and test these new radiation detectors. In addition to the design and construction of the sensors the authors also report, in considerable detail, on the electrical characteristics of the CZT crystals used to make their detectors.},
doi = {10.2172/751018},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}

Technical Report:

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