Detection system for high-resolution gamma radiation spectroscopy with neutron time-of-flight filtering

Title: Detection system for high-resolution gamma radiation spectroscopy with neutron time-of-flight filtering

A .gamma.-radiation detection system that includes at least one semiconductor detector such as HPGe-Detector, a position-sensitive .alpha.-Detector, a TOF Controller, and a Digitizer/Integrator. The Digitizer/Integrator starts to process the energy signals of a .gamma.-radiation sent from the HPGe-Detector instantly when the HPGe-Detector detects the .gamma.-radiation. Subsequently, it is determined whether a coincidence exists between the .alpha.-particles and .gamma.-radiation signal, based on a determination of the time-of-flight of neutrons obtained from the .alpha.-Detector and the HPGe-Detector. If it is determined that the time-of-flight falls within a predetermined coincidence window, the Digitizer/Integrator is allowed to continue and complete the energy signal processing. If, however, there is no coincidence, the Digitizer/Integrator is instructed to be clear and reset its operation instantly.

Inventors:: Dioszegi, Istvan; Salwen, Cynthia; Vanier, Peter

Issue Date:: 2014-12-30

OSTI Identifier:: 1166754

Assignee:: Brookhaven Science Associates, LLC (Upton, NY) CHO

Patent Number(s):: 8,921,801

Application Number:: 13/343,294

Contract Number:: AC02-98CH10886

Resource Relation:: Patent File Date: 2012 Jan 04

Research Org:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

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Works referenced in this record:

Gamma-ray imaging with a coaxial HPGe detector
journal, November 2005

Niedermayr, T.; Vetter, K.; Mihailescu, L.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 553, Issue 3, p. 501-511
DOI: 10.1016/j.nima.2005.07.017

Measurement of 14 MeV neutron-induced prompt gamma-ray spectra from 15 elements found in cargo containers
journal, April 2008

Perot, B.; Carasco, C.; Bernard, S.
Applied Radiation and Isotopes, Vol. 66, Issue 4, p. 421-434
DOI: 10.1016/j.apradiso.2007.11.011

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