Material characterization using neutron sources

Stanley Schneider; Theodore Denis Fay III

doi:10.1117/12.138658

2 February 1993 Material characterization using neutron sources

Stanley Schneider, Theodore Denis Fay III

Proceedings Volume 1737, Neutrons, X Rays, and Gamma Rays: Imaging Detectors, Material Characterization Techniques, and Applications; (1993) https://doi.org/10.1117/12.138658
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

A general systematic method to characterize the material composition of an object to be interrogated is posed and discussed. It employs neutrons to provide for the excitation of the nuclear isomer states of the isotopes constituting the body. Observation of the characteristic energies of the gamma rays emitted during the prompt relaxation identifies the isotope species. The intensity of the gamma rays together with neutron cross section data allows for the determination of species abundance. Measurements using multiple detectors that are spatially offset allows for the generation of images of the body composition isotope by isotope. This isomer excitation technique enables isotope identification for species of Z >= 3. Observation of neutron capture (gamma) emission supplements the method for hydrogen and helium-3. Several applications of the technique are described.

Citation Download Citation

Stanley Schneider and Theodore Denis Fay III "Material characterization using neutron sources", Proc. SPIE 1737, Neutrons, X Rays, and Gamma Rays: Imaging Detectors, Material Characterization Techniques, and Applications, (2 February 1993); https://doi.org/10.1117/12.138658

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