Germanium-Based Detectors for Gamma-Ray Imaging andSpectroscopy

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Germanium-based detectors are the standard technology usedfor gamma-ray spectroscopy when high efficiency and excellent energyresolution are desired. By dividing the electrical contacts on thesedetectors into segments, the locations of the gamma-ray interactionevents within the detectors can be determined as well as the depositedenergies. This enables simultaneous gamma-ray imaging and spectroscopyand leads to applications in the areas of astronomy, nuclear physics,environmental remediation, nuclear nonproliferation, and homelandsecurity. Producing the fine-pitched electrode segmentation oftenrequired for imaging has been problematic in the past. To address thisissue, we have developed an amorphous-semiconductor contact technology.Using this technology, fully passivated detectors with closely spacedcontacts can be produced ... continued below

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Amman, Mark; Luke, Paul N. & Boggs, Steven E. October 13, 2006.

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Germanium-based detectors are the standard technology usedfor gamma-ray spectroscopy when high efficiency and excellent energyresolution are desired. By dividing the electrical contacts on thesedetectors into segments, the locations of the gamma-ray interactionevents within the detectors can be determined as well as the depositedenergies. This enables simultaneous gamma-ray imaging and spectroscopyand leads to applications in the areas of astronomy, nuclear physics,environmental remediation, nuclear nonproliferation, and homelandsecurity. Producing the fine-pitched electrode segmentation oftenrequired for imaging has been problematic in the past. To address thisissue, we have developed an amorphous-semiconductor contact technology.Using this technology, fully passivated detectors with closely spacedcontacts can be produced using a simple fabrication process. The currentstate of the amorphous-semiconductor contact technology and thechallenges that remain will be given in this paper.

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  • Journal Name: Nuclear Instruments and Methods in Physics Research SectionA; Journal Volume: 579; Journal Issue: 2; Related Information: Journal Publication Date: 09/2007

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  • Report No.: LBNL--61412-JArt.
  • Grant Number: DE-AC02-05CH11231
  • Grant Number: NASA:NNG04WF321
  • Office of Scientific & Technical Information Report Number: 927372
  • Archival Resource Key: ark:/67531/metadc901553

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  • October 13, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Sept. 29, 2016, 2:48 p.m.

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Amman, Mark; Luke, Paul N. & Boggs, Steven E. Germanium-Based Detectors for Gamma-Ray Imaging andSpectroscopy, article, October 13, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc901553/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.