用于校准剂量仪和剂量率仪及确定其能量响应的X和γ参考辐射 第4部分:低能X射线参考辐射场中场所和个人剂量仪的校准
X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy - Part 4: Calibration of area and personal dosemeters in low energy X reference radiation fields