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在X和γ参考辐射场中对用于直接测量个人剂量当量Hp(10)电离室的各项性能,包括漏电流、饱和特性、极性效应、剂量率响应、能量响应和角响应等进行了测试,并对各项测试结果进行了详细分析。结果表明:该电离室漏电流小于±5fA,具有良好的饱和特性;在0.8mSv·h-1～1.3Sv·h-1剂量率范围内响应的相对固有误差小于2%。根据ISO4037-3和PTB-Dos-34中给出的转换系数hpk(10;R.α),在光子能量范围24keV～1.25MeV、入射角度α在0o～80o范围的条件下,该电离
Various properties, including leakage current, saturation characteristics, polar effects, dose rate response, energy response, and angular response for direct measurement of the individual dose equivalent Hp (10) ionization chamber were performed in X and γ reference radiation fields Test, and conducted a detailed analysis of the test results. The results show that the leakage current of ionization chamber is less than ± 5fA and has good saturation characteristics. The relative inherent error of the response is less than 2% in the dose rate range of 0.8mSv · h-1 ~ 1.3Sv · h-1. According to the conversion coefficient hpk (10; R.α) given in ISO4037-3 and PTB-Dos-34, under the condition of the photon energy range of 24keV to 1.25MeV and the incident angle α of 0o to 80o, the ionization