Gamma-ray imaging with coaxial HPGe detector

Niedermayr, T; Vetter, K; Mihailescu, L; Schmid, G J; Beckedahl, D; Kammeraad, J; Blair, J

doi:10.1016/j.nima.2005.07.017

Gamma-ray imaging with coaxial HPGe detector

Journal Article · Tue Apr 12 00:00:00 EDT 2005 · Nuclear Instrumentations and Methods in Physics Research - Section A, n/a, n/a, April 15, 2005, pp. 24

DOI:https://doi.org/10.1016/j.nima.2005.07.017· OSTI ID:940163

Niedermayr, T; Vetter, K; Mihailescu, L; Schmid, G J; Beckedahl, D; Kammeraad, J; Blair, J

We report on the first experimental demonstration of Compton imaging of gamma rays with a single coaxial high-purity germanium (HPGe) detector. This imaging capability is realized by two-dimensional segmentation of the outside contact in combination with digital pulse-shape analysis, which enables to image gamma rays in 4{pi} without employing a collimator. We are able to demonstrate the ability to image the 662keV gamma ray from a {sup 137}Cs source with preliminary event selection with an angular accuracy of 5 degree with an relative efficiency of 0.2%. In addition to the 4{pi} imaging capability, such a system is characterized by its excellent energy resolution and can be implemented in any size possible for Ge detectors to achieve high efficiency.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Sponsoring Organization:: USDOE

DOE Contract Number:: W-7405-ENG-48

OSTI ID:: 940163

Report Number(s):: UCRL-JRNL-211944

Journal Information:: Nuclear Instrumentations and Methods in Physics Research - Section A, n/a, n/a, April 15, 2005, pp. 24, Journal Name: Nuclear Instrumentations and Methods in Physics Research - Section A, n/a, n/a, April 15, 2005, pp. 24

Country of Publication:: United States

Language:: English

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