Dosimetry of fast neutrons in 1W nuclear reactor with plastic nuclear-track detectors.

Yasubuchi, Shiro; Hoshi, Masaharu; Itoh, Takeshi; Hisanaga, Saemi; Niwa, Takeo; Miki, Ryota; Kondo, Sohei

doi:10.3769/radioisotopes.38.9_359

Cited by 6 publications

(1 citation statement)

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“…The amount of the decrease in the neutron dose-rate due to insertion of the samples was 13±3%; this was measured with the plastic nuclear-track detector, TS16N, attached to the samples<'). The use of TS16N with this high accuracy required professional experiences< 3 J. On the other hand, the Fricke solution is simple to prepare and its accuracy in dosimetry is very high<•J-<'J.…”

Section: Introductionmentioning

confidence: 99%

Dosimetry of Fission Neutrons and Gamma-Rays from Nuclear Reactors by Paired Fricke Solutions

Nakamura

1992

Journal of Nuclear Science and Technology

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It is found that the heavy-water Fricke solution showed lower sensitivity to fission neutrons (G-value of 3.7) but higher sensitivity to r-rays (G=l6.3) than the light-water Fricke solution (G=5.6 for neutrons; G=l5.4 for r-rays). Using these differential G-values of the paired solutions and the basic principles of Fricke dosimeter, the following paired equations were derived for the heavy-water and the light-water solutions that were exposed to neutron-gamma mixed radiation; DN=1,400A-1,200A' and D 0 =460A'-270A, where DN and Do are the absorbed doses of neutrons and r-rays in the light-water solution, respectively, and A and A' are absorbance increases in the light-water and the heavy-water solution, respectively. The validity of the paired equations was tested by exposure of the paired solutions to the mixed fields of nuclear reactors at Kinki University and Musashi Institute of Technology. Obtained pairs of DN and Do values agreed reasonably well with those measured by paired ionization chambers.

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Section: Introductionmentioning

confidence: 99%