title: GENERALISATION OF RADIATOR DESIGN TECHNIQUES FOR PERSONAL NEUTRON DOSEMETERS BY UNFOLDING METHOD.
abstract: A novel technique for designing a radiator suitable for personal neutron dosemeter based on plastic track detector was discussed. A multi-layer structure has been proposed in the previous report, where the thicknesses of plural polyethylene (PE) layers and insensitive ones were determined by iterative calculations of double integral. In order to arrange this procedure and make it more systematic, unfolding calculation has been employed to estimate an ideal radiator containing an arbitrary hydrogen concentration. In the second step, realistic materials replaced it with consideration of minimisation of the layer number and commercial availability. A radiator consisting of three layers of PE, Upilex and Kapton sheets was finally designed, for which a deviation in the energy dependence between 0.1 and 20 MeV could be controlled within 18 %. An applicability of fluorescent nuclear track detector element has also been discussed.
authors.affiliation: Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan oda@maritime.kobe-u.ac.jp.
authors.forename: K
authors.initials: K
authors.lastname: Oda
authors.affiliation: Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nakayama
authors.affiliation: Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Umetani
authors.affiliation: Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kajihara
authors.affiliation: Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yamauchi
mesh_terms: D005453:Fluorescence; D006801:Humans; D006859:Hydrogen / Q000737:chemistry; D015233:Models, Statistical; D009502:Neutrons; D016273:Occupational Exposure / Q000032:analysis; D020959:Polyethylene / Q000737:chemistry; D011829:Radiation Dosage; D000072232:Radiation Dosimeters; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*; D011835:Radiation Protection / Q000295:instrumentation / Q000379:methods*; D011874:Radiometry / Q000295:instrumentation / Q000379:methods*; D012680:Sensitivity and Specificity
chemical_list: D006859:Hydrogen; D020959:Polyethylene