Evans C J, Shamsaie M, Ghara'ati H, Ali P A
Department of Physics, University of Wales Swansea, U.K.
Appl Radiat Isot. 1998 May-Jun;49(5-6):559-60. doi: 10.1016/s0969-8043(97)00187-5.
Annular XRF systems, using backscattering geometry, have advantages of convenience of use, but it is difficult to predict their sensitivity to concentrations of heavy metals ta different depths, or the contribution of scattered radiation to the background. A Monte Carlo program has therefore been developed to carry out calculations of this type. Several variance-reduction techniques are included. Preliminary results for the detection of platinum are given.
采用反向散射几何结构的环形X射线荧光光谱系统使用方便，但难以预测其对不同深度重金属浓度的灵敏度，或散射辐射对背景的贡献。因此，已开发出一个蒙特卡罗程序来进行这类计算。其中包括几种方差缩减技术。给出了铂检测的初步结果。
