Experimental determination of collection efficiency of ionization chamber in field of pulsed X-rays.

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概要

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• The collection efficiency <I>f</I>-value of a parallel-plate ionization chamber exposed to a pulsed X-ray field of high exposure rate has been discussed. The dependence of the <I>f</I>-value upon various parameters was clarified by numerical calculations of the rate equations for positive and negative ions. The saturation curve was also obtained with the normalized variables.<BR>A method was proposed for determining the <I>f</I>-value in an unknown pulsed X-ray field. It was found that the true <I>f</I>-value could be evaluated by fitting a normalized saturation curve to several ionic charges at different applied voltages. Experiments were carried out in a pulsed X-ray field generated by an electron linear accelerator, and the effectiveness of the method was confirmed.

• 一般社団法人 日本原子力学会の論文

著者

• Kawanishi Masaharu

  Institute Of Scientific And Industrial Research Osaka University

• Yamamoto Takayoshi

  Institute Of Scientific And Industrial Research Osaka University

• KOBAYASHI Hideo

  Institute of Scientific and Industrial Research, Osaka University

• ODA Keiji

  Institute of Scientific and Industrial Research, Osaka University

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• Experimental determination of collection efficiency of ionization chamber in field of pulsed X-rays.

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