Dose inter-comparison studies for ⁶⁰Co gamma-ray and electron beam irradiation in the year 2002

Dose inter-comparison studies for 60 Co gamma-ray and electron beam irradiation in the year 2002 1 first-author 2 3 1 1 1 1 1 3 Radiometrology Center, China Institute of Atomic Energy (CIAE), Beijing 102413, China; Radiometrology Center, China Institute of Atomic Energy (CIAE), Beijing 102413, China; Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute(JAERI), 1233 Watanuki, Takasaki, Gumma 370-1292, Japan; Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute(JAERI), 1233 Watanuki, Takasaki, Gumma 370-1292, Japan; Laboratory for Measurements of Technological Doses (LMTD), Institute of Nuclear Chemistry and Technology (INCT), ul. Dorodna 16, 03-195 Warszawa, Poland Laboratory for Measurements of Technological Doses (LMTD), Institute of Nuclear Chemistry and Technology (INCT), ul. Dorodna 16, 03-195 Warszawa, Poland Dose inter-comparison studies for 60 Co γ-ray and 10MeV electron beam irradiation were carried out from July to October in 2002. The purpose of the studies was to check the reliability of the alanine-PE film dosimeters made by CIAE, which will be used as transfer standard dosimetry system mainly for electron beam irradiation. The expanded uncertainty of CIAE alanine/EPR dosimetry system was 4.1% for doses not higher than 10kGy and 5.4% for those above 10kGy ( k =2). CIAE alanine-PE film dosimeters were sent to JAERI, RISO (National Laboratory in Denmark) and INCT respectively, which were irradiated by 60 Co gamma-rays or electron beams in each laboratory. The irradiated dosimeters were then sent back to CIAE for electron paramagnetic resonance (EPR) analysis. The agreements were obtained to be ±1.9% for gamma-ray dose measurement and ±4.3% for electron beam dose measurement, which were all within the combined uncertainty of the reference and CIAE alanine/EPR dosimetry system. Furthermore, the overall mean ratio was found to be 0.995 with 1.8% in the coefficient of variation (CV). The preliminary inter-comparison studies indicated that CIAE film alanine/EPR dosimetry system had the potential to be used as a transfer dosimetry system for high dose measurement. Alanine film dosimeter Dose inter-comparison Uncertainty 60 Co gamma-ray irradiation Electron beam irradiation References Bradshaw W W , Cadena D G , Crawford E W et al . Radiat Res , 1962 , 17 ( 1 ): 11 - 21 Radiat Res Regulla D F , Deffer U . Int J Appl Radiat Isot , 1982 , 33 : 1101 - 1114 Int J Appl Radiat Isot Regulla D F , Deffer U . Radiat Phys Chem , 1983 , 22 ( 3-5 ): 305 - 309 Radiat Phys Chem Regulla D F , Deffer U . High Dose Dosim, STI/PUB/671 ( Vienna IAEA ), 1985 , 221 - 235 High Dose Dosim, STI/PUB/671 Lin M , Ye H S , Lin J W et al . At Energy Sci Technol (in Chinese) , 1998 , 32 ( 6 ): 510 - 516 At Energy Sci Technol (in Chinese) Lin J W , Long S X , Ye H S et al . At Energy Sci Technol (in Chinese) , 1998 , 32 ( 6 ): 524 - 529 At Energy Sci Technol (in Chinese) Lin M , Lin J W , Chen Y D et al . Proceedings of techniques for high dose dosimetry in industry, agriculture and medicine, Vienna 2-5 Nov, 1998, IAEA-TEDOC- 1070 , 1999 , 77 - 82 Kojima T , Ranjith H L A , Haruyama Y et al . Appl Radiat Isot , 1993 , 44 : 41 - 45 Appl Radiat Isot Sharpe P , Miller A . Guidelines for the calibration of dosimeters for use in radiation processing , CIRM 29 , 1999 , 1 - 15 Guidelines for the calibration of dosimeters for use in radiation processing Peimel-Stuglik Z , Fabisiak S , Sartowska B . An ALANPOL - EPR-alanine dosimeter for low (0.5-10 kGy) technological doses, INCT Annual Report 2001 , 53 - 56 An ALANPOL - EPR-alanine dosimeter for low (0.5-10 kGy) technological doses, INCT Annual Report 2001 Kojima T , Tachibana H , Haneda N et al . Radiat Phys Chem , 1999 , 54 : 619 - 626 Radiat Phys Chem O657,TL818 2003-07-07 2004-06-01 2021-01-19 2004 Nuclear Science and Techniques 03 15