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

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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 ... continued below

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Medium: P; Size: 70 pages

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Brunett, B. A.; Lund, J. C.; Scyoc, J. M. Van; Hilton, N. R.; Lee, E. Y. & James, R. B. January 1, 1999.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

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.

Physical Description

Medium: P; Size: 70 pages

Notes

INIS; OSTI as DE00751018

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  • Other Information: PBD: 1 Jan 1999

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  • Report No.: SAND99-8215
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/751018 | External Link
  • Office of Scientific & Technical Information Report Number: 751018
  • Archival Resource Key: ark:/67531/metadc707878

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 12, 2016, 6:50 p.m.

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Brunett, B. A.; Lund, J. C.; Scyoc, J. M. Van; Hilton, N. R.; Lee, E. Y. & James, R. B. Low-cost cadmium zinc telluride radiation detectors based on electron-transport-only designs, report, January 1, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc707878/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.