Amorphous-semiconductor-contact germanium-based detectors for gamma-ray imaging and spectroscopy

Amman, M.; Luke, P.N.; Boggs, S.E.

doi:10.1016/j.nima.2007.05.307

Amorphous-semiconductor-contact germanium-based detectors for gamma-ray imaging and spectroscopy

Journal Article · Thu May 31 04:00:00 EDT 2007 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2007.05.307· OSTI ID:1454507

Amman, M. ^[1]; Luke, P.N. ^[2]; Boggs, S.E. ^[3]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Nuclear Science and Security Consortium
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Univ. of California, Berkeley, CA (United States). Dept. of Physics

Germanium-based detectors are the standard technology used for gamma-ray spectroscopy when high efficiency and excellent energy resolution are desired. By dividing the electrical contacts on these detectors into segments, the locations of the gamma-ray interaction events within the detectors can be determined as well as the deposited energies. This enables simultaneous gamma-ray imaging and spectroscopy and leads to applications in the areas of astronomy, nuclear physics, environmental remediation, nuclear nonproliferation, and homeland security. Producing the fine-pitched electrode segmentation often required for imaging has been problematic in the past. To address this issue, we have developed an amorphous-semiconductor contact technology. Using this technology, fully passivated detectors with closely spaced contacts can be produced using a simple fabrication process. The current state of the amorphous-semiconductor contact technology and the challenges that remain are given in this paper.

Research Organization:: Univ. of California, Berkeley, CA (United States). Nuclear Science and Security Consortium

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)

DOE Contract Number:: NA0000979

OSTI ID:: 1454507

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: 2 Vol. 579; ISSN 0168-9002

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

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