Abstract
Low-energy photons produced by the Compton scattering from hydrogen increase the background in the lower-energy region of the gamma-ray spectrum. This results in an increase in the detection limit for trace elements. In multiple photon detection prompt gamma-ray analysis (MPGA), only those elements that simultaneously emit two or more prompt gamma-rays, which have cascade relation and are emitted within a short interval, can be measured. Therefore, the influence of hydrogen can be reduced. In this study, standard polymer and food samples are measured. The hydrogen background is reduced in MPGA.
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Toh, Y., Oshima, M., Kimura, A. et al. Reduction of Compton background from hydrogen in prompt gamma-ray analysis by multiple photon detection. J Radioanal Nucl Chem 278, 685–689 (2008). https://doi.org/10.1007/s10967-008-1505-x
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DOI: https://doi.org/10.1007/s10967-008-1505-x