Journal Article

Applicability of convex hull in multiple detector response space for neutron dose measurements

Makoto Hashimoto, Takeshi Iimoto and Toshiso Kosako

in Radiation Protection Dosimetry

Volume 136, issue 1, pages 1-10
Published in print August 2009 | ISSN: 0144-8420
Published online July 2009 | e-ISSN: 1742-3406 | DOI: https://dx.doi.org/10.1093/rpd/ncp134
Applicability of convex hull in multiple detector response space for neutron dose measurements

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A novel neutron dose measurement method that flexibly responds to variations in the neutron field is being developed by Japan Atomic Energy Agency. This is an implementation of the multi-detector method (first introduced in 1960s) for neutron dose evaluation using a convex hull in the response space defined for multiple detectors. The convex hull provides a range of possible neutron dose corresponding to the incident neutron spectrum. Feasibility of the method was studied using a simulated response of mixed gas proportional counter. Monochromatic neutrons are shown to be fundamentally suitable for mapping the convex. The convex hull can be further reduced taking into consideration a priori information about physically possible incident neutron spectra, for example, theoretically derived moderated neutron spectra originated from a fission neutron source.

Journal Article.  5212 words.  Illustrated.

Subjects: Nuclear Chemistry, Photochemistry, and Radiation

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