A comparison of the primary processes of the radiolyses induced by .ALPHA.-,.BETA.-,and .GAMMA.-rays.

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概要

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• By using the cross sections derived by the binary encounter collision theory and the assumption of a continuous slowing down, the <I>G</I>-values for the ionization and excitation of helium gas irradiated by α-, β-, and γ-rays have been calculated. In the radiolysis by high-energy electrons, the <I>G</I>-values started to decrease at an incident electron energy of about 10<SUP>3</SUP> eV with a decrease in the energy. Calculation showed that, if the radiation energy is extremely high, the <I>G</I>-values are independent of the kind of radiation. In the radiolysis induced by α-particles, the ratio of the yield resulting from the direct interaction with α-particles to that due to the secondary electrons was calculated as a function of the energy of the incident α-particles. When the energy was 8 MeV, the ratio for ionization was calculated to be 1.31.

• 公益社団法人 日本化学会の論文

著者

• Sato Shin

  Department of Applied Physics, Tokyo Institute of Technology

• Okazaki Kiyoshi

  Department of Applied Physics, Tokyo Institute of Technology

• Kowari Ken-ichi

  Department of Applied Physics, Tokyo Institute of Technology

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