Developing Low Cost Systems for Detection of Threat Materials
C Murray Bartle, Chris Kröger, William Stephenson
National Isotope Centre, GNS Science, PO Box 31312, Lower Hutt, New Zealand

Work Plan:

  1. In this project the use of low cost tools and novel portable radiation probe systems that may locate (or have the potential to locate) threat materials especially larger amounts of materials hidden nearby will be investigated.  Radioisotope sources which support the concept of portability and low cost will be used (e.g., Cs-137 or Cf-252). The focus will be on use of the ‘Rad-Pod’ and the ‘Bi-Detector’.  The design and use of this equipment take advantage of count-rates comparisons between multiple detectors. This is a simple technique for enhancing the capability of a low cost combination of source and detectors. A similar ‘comparative’ technique is one means of interpreting images from larger scanning systems by Custom officers around the world.  Two case studies will be developed around:
    • Detection of threat bulk materials in a field environment
    • Applications to detection of threat materials in industrial and/or indoor environments.
  2. Report on the utilisation of the CRP Website.
  3. The advancements transferable for the rapid developments of x-ray systems in industry will also be reported to assist in setting priorities for development of neutron based equipment that complement other detection systems.  The progress in the uses of x-ray systems sets up opportunities for neutron systems to be shaped as an appropriate complementary tool.  The niches where neutron-based systems have advantages in stand alone systems can also be identified.