Stajic J, Nikezic D
University of Kragujevac, Faculty of Science, Serbia.
Appl Radiat Isot. 2012 Mar;70(3):528-32. doi: 10.1016/j.apradiso.2011.10.016. Epub 2011 Nov 12.
Detection efficiency of a circular detector for particles with a finite range, emitted from a point-like source was investigated, taking a critical detection angle into account. Particles emitted from the source lose some of their energy in the surrounding medium, before entering the detector material. Incident-energy dependence of the critical detection angle was taken into account. The part of the detector exposed to the particles impacting at angles greater than the critical angle (with respect to the detector surface), was determined. Several different cases were investigated, depending on the radius of the detector and the position of the detector with respect to the source. Detection probability expressions were derived for each of the cases. Results obtained using these expressions were compared with Monte Carlo calculations.
研究了点状源发射的具有有限射程的粒子的圆形探测器的探测效率，并考虑了临界探测角。从源发射的粒子在进入探测器材料之前，会在周围介质中损失一些能量。考虑了临界探测角的入射能量依赖性。确定了探测器中暴露于以大于临界角（相对于探测器表面）的角度撞击的粒子的部分。根据探测器的半径和探测器相对于源的位置，研究了几种不同的情况。推导了每种情况下的探测概率表达式。使用这些表达式获得的结果与蒙特卡罗计算结果进行了比较。
