A practical fast-neutron dosemeter based on electrochemically etched CR-39 detector with angle-independent response |
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| Affiliation: | 1. GIE Charlebourg, Amethyst group, 65, avenue Foch, 92250 La Garenne-Colombes, France;2. CNS CROM Compiègne, Amethyst group, 3, rue Jean-Jacques-Bernard, 60200 Compiègne, France;3. Campus Sciences, centre de recherche en automatique de Nancy (Cran), BP 70239, 54506 Vandœuvre-lès-Nancy cedex, France;4. Campus Sciences, université de Lorraine, UMR 7039, BP 70239, 54506 Vandœuvre-lès-Nancy cedex, France;5. CNRS, UMR7039, Campus Sciences, BP 70239, 54506 Vandœuvre-lès-Nancy cedex, France;1. Institute of Industrial Ecology, Russian Federation;2. Ural Federal University, Russian Federation;3. The Beloyarsk NPP, Russian Federation;4. FSUE “RFNC-VNIITF named after Academ. E.I. Zababakhin”, Russian Federation |
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| Abstract: | Demand for improved dose-equivalent dosemeters for fast neutrons has been growing in recent years. Among the other dosemeters currently under investigations, electrochemically etched CR-39 detector offers promising applications for fast-neutron dosimetry. In this paper we present, first, our theoretical and experimental work to achieve a nearly flat dose-equivalent response over the range 0.1 to 19 MeV for normally incident neutrons. The paper then outlines a method developed by us to circumvent the problem of direction dependence of the dosemeter. Here, we have attached CR-39 detectors along with the optimized radiator stacks to three adjacent sides of a supporting cube made of Perspex and irradiated with neutrons at different cube orientations. By this means, the direction dependence has been reduced to less than 25%. Finally, a design for practical fast-neutron dosemeter is proposed. |
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