Radiation damage of fluorocarbon by krypton-85 beta-rays, (IV). Irradiation experiments using krypton-85 beta-rays on trichlorofluoromethane in batch and flow system.:Irradiation Experiments using Krypton-85 Beta-Rays on Trichlorofluoromethane in Batch an

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概要

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• A series of two irradiation experiments at -30°C were performed on CCl<SUB>3</SUB>F using a 282 Ci <SUP>85</SUP>Kr source, with the irradiation facility arranged in (a) and (b) in flow modes of operation, to determine the decomposition yields in relation to absorbed dose, and to observe differences in the CCl<SUB>3</SUB>F decomposition behavior according to combination of radiation source and operating mode. The experiments revealed-among other data-that : (1) The decomposition yield of CCl<SUB>3</SUB>F and the yields of the individual degradation products were related linearly to the absorbed dose, with coefficients representing CCl<SUB>3</SUB>F energy decomposition of 0.026mol/o/Mrad (<I>G</I>=3.2) in batch and 0.053mol/o/Mrad (<I>G</I>=6.7) in flow system ; (2) No significant difference in the decomposition yield was observed between irradiation by <SUP>85</SUP>Kr β-rays and <SUP>60</SUP>Co γ-rays ; (3) Compared with batch, flow operation was found to provide higher CC13F decomposition yield ; (4) Inspection of the inner surfaces of the circuit upon disassembly of the facility after the experiment revealed no corrosion or deposit ; (5) In an actual industrial <SUP>85</SUP>Kr removal plant, the <I>G</I>-value for CCl<SUB>3</SUB>F decomposition is expected to amount to about 10, so that the radiation damage of fluorocarbon should not present a critical problem for the solvent absorption process.

• 一般社団法人 日本原子力学会の論文

著者

• OOTSUKA Norikatsu

  Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute

• YAMAMOTO Tadatoshi

  Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute

関連論文

• Dosimetry in krypton-85 gas irradiation vessel.
• Radiation damage of fluorocarbon by krypton-85 beta-rays,(I). Radiolysis of trichlorofluoromethane by cobalt-60 gamma-rays.:Radiolysis of Trichlorofluoromethane by Cobalt-60 Gamma-Rays
• Irradiation characteristics of krypton-85 irradiation facility using pressurization-dissolution method.
• Storage of krypton-85 by adsorption method.
• Radiation damage of fluorocarbon by krypton-85 beta-rays, (IV). Irradiation experiments using krypton-85 beta-rays on trichlorofluoromethane in batch and flow system.:Irradiation Experiments using Krypton-85 Beta-Rays on Trichlorofluoromethane in Batch an
• Radiation damage of fluorocarbon by krypton-85 beta-rays, (II). Radiolysis of some fluorocarbons by cobalt-60 gamma-rays.:Radiolysis of Some Fluorocarbons by Cobalt-60 Gamma-Rays

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