Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1994, Vol. 5 ›› Issue (3): 166

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LARGE VOLUME IONIZATION CHAMBER USED AS LABORATORY REFERENCE FOR LOW ENERGY X-RAY MEASUREMENT

Yang Guoshan(杨国山), Xue Yongku(薛永库) and Cai Fangong(蔡反攻)   

  1. Institute of Radiation Medicine, Beijing 100850, China
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Yang Guoshan(杨国山), Xue Yongku(薛永库) and Cai Fangong(蔡反攻). LARGE VOLUME IONIZATION CHAMBER USED AS LABORATORY REFERENCE FOR LOW ENERGY X-RAY MEASUREMENT.Nuclear Science and Techniques, 1994, 5(3): 166

Abstract: A large volume spherical ionization chamber of 195 mm diameter and 0.36 mg/cm2 wall thickness made from conducting carbon-fibre epoxy composite material has been developed. The mechanical intensity of the chamber is satisfactory for a good longterm volume stability. Owing to its large volume and thin wall, the chamber is sensitive to low energy photon beams and has excellent energy-response characteristics. This ionization chamber is suitable not only for a laboratory reference but also for measurement of low energy photon beam exposure rates at protection-level.

Key words: Low energy, X-rays, Ionization chamber, Carbon-fibre