Accession Number : ADD017993

Title :   Detection of Subsurface Fissionable Nuclear Contamination Through the Application of Photonuclear Techniques.

Descriptive Note : Patent, Filed 6 Oct 94, patented 27 Feb 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Mastny, Gary F

Report Date : 27 Feb 1996

Pagination or Media Count : 5

Abstract : A photoneutron detection apparatus comprises an X ray generator and a neutron detector adapted for placement in proximity to subsurface soil. The X ray generator produces timed pulses of X ray photons having a range of electronically controlled energies which penetrate the subsurface soil to produce photoneutron emissions that are received by the neutron detector. The neutron detector generates a signal representative of the neutron flux. A signal analysis system time correlates the signal with the timed X ray pulses to determine the presence of selected contaminants.

Descriptors :   *RADIOACTIVE CONTAMINATION, *PATENTS, *NEUTRON DETECTORS, *GAMMA NEUTRON REACTIONS, SOILS, PULSES, PHOTONS, GENERATORS, SUBSURFACE, NEUTRON FLUX, X RAY APPARATUS, PHOTONUCLEAR REACTIONS

Subject Categories : Radiation Pollution and Control
      Nuclear Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE