Abstract：In order to more accurately carry out the traceability and magnitude transfer of X-rays at low dose rate levels,six low air ratio kinetic energy X-ray reference radiation were established according to ISO 4037-1.The half-value layer, energy spectrum, average energy and effective energy of the corresponding radiation are obtained through experiments. Compare data with ISO4037 and PTB data, NIST data,The error is within 5%,It indicates that the established X-ray reference radiation quality meets the requirements of the standard specification.Subsequent research on low-dose rate X-ray quantity recurrence and quantity transfer methods will continue, laying the foundation for international and domestic value transfer and comparison work.
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［2］李兵, 吴金杰, 方方, 等. 医用诊断X射线束半值层和同质系数的研究与测量 ［J］. 核电子学与探测技术, 2012, 32 (8):946-952.
［3］ISO4037-1: X and gamma reference radiation for calibrating for dosemeters and doserate meters and for determining their response as a function of photon energy part 1: Radiation characteristics and production methods ［S］. 1996.
［4］Zhang Q L, Han M C, Huang Y W, et al. Establishment of Filtered X-ray Reference Radiation Based on ISO4037-1:1996 in CIRP ［J］. Journal of Nuclear Science and Technology, 2008,45 (sup5):278-281.
［5］吴金杰, 杨元第, 张彦立. 中能X射线标准辐射场的初步研究 ［J］. 核电子学与探测技术, 2010, 30(7):949-951.
2018, Vol. 39 
