title: SIMPLIFIED PRACTICAL TEST METHOD FOR PORTABLE DOSE METERS USING SEVERAL SEALED RADIOACTIVE SOURCES.
abstract: Sealed radioactive sources which have small activity were employed for the determination of response and tests for non-linearity and energy dependence of detector responses. Close source-to-detector geometry (at 0.3 m or less) was employed to practical tests for portable dose meters to accumulate statistically sufficient ionizing currents. Difference between response in the present experimentally studied field and in the reference field complied with ISO 4037 due to non-uniformity of radiation fluence at close geometry was corrected by use of Monte Carlo simulation. As a consequence, corrected results were consistent with the results obtained in the ISO 4037 reference field within their uncertainties.
authors: Japan Radioisotope Association, Research and Development Radioisotope Technological Support Business Promotion Department, 2-28-45 Honkomagome, Bunkyo-ku, Tokyo, Japan mikamoto-takahiro@jrias.or.jp.
authors: Takahiro
authors: T
authors: Mikamoto
authors: Japan Radioisotope Association, Research and Development Radioisotope Technological Support Business Promotion Department, 2-28-45 Honkomagome, Bunkyo-ku, Tokyo, Japan.
authors: Takahiro
authors: T
authors: Yamada
authors: National Metrology Institute of Japan, Ionizing Radiation Section, Quantum Radiation Division, Central 2, Umezono 1-1-1, Tsukuba, Ibaraki 305-8568, Japan.
authors: Tadahiro
authors: T
authors: Kurosawa
mesh_terms: D000465:Algorithms; D002138:Calibration; D002586:Cesium / Q000032:analysis; D003198:Computer Simulation; D062406:Fukushima Nuclear Accident; D006801:Humans; D007564:Japan; D009010:Monte Carlo Method; D017711:Nonlinear Dynamics; D017785:Photons; D000072232:Radiation Dosimeters; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods; D011839:Radiation, Ionizing; D018788:Radioactive Hazard Release; D012016:Reference Values
chemical_list: D002586:Cesium