Chen J, Roos H, Kellerer A M
Institute for Radiation Biology, GSF, Neuherberg, Germany.
Radiat Res. 1992 Dec;132(3):271-6.
Microdosimetric measurements in beams of diagnostic X rays (between 30 and 125 kV) have been performed. In these pulsed radiation fields, microdosimetric measurements are possible only by application of the variance-covariance technique. The dose mean lineal energy, yD, is determined for various simulated diameters, at different depths in the absorber, and at different points within the pulse intervals. From the measured temporal dependences one can also obtain values of yD for different X-ray pulse generators. The results demonstrate the potential of the variance-covariance method for a diversity of microdosimetric measurements in radiation protection and in the quality control of radiation beams.
已在诊断性X射线束（30至125千伏）中进行了微剂量测量。在这些脉冲辐射场中，只有应用方差-协方差技术才能进行微剂量测量。在吸收体的不同深度以及脉冲间隔内的不同点，针对各种模拟直径确定剂量平均线性能量yD。从测量的时间依赖性中，还可以获得不同X射线脉冲发生器的yD值。结果证明了方差-协方差方法在辐射防护和辐射束质量控制中的各种微剂量测量方面的潜力。
