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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >EVALUATION OF THE UNCERTAINTY IN SCATTERING EXPERIMENTS: I- Averaging cross sections
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EVALUATION OF THE UNCERTAINTY IN SCATTERING EXPERIMENTS: I- Averaging cross sections

机译：散射实验不确定性的评估：I-平均横截面

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摘要

To improve the accuracy in relating differential scattering cross sections to the measured count rates, when a finite target and detector (and possibly source) allow a range of scattering angles to be admitted, we have developed a method of weighing the angular variation of d sigma/d OMEGA. A Monte Carlo code generates a distribution of the possible scattering angles, simulating all allowed trajectories from source to target and then to detector. Directions are uniformly distributed so as to impose no a priori physical constraints except those due to geometry: source, target and detector positions and dimensions, and also all collimation of the beams. The resulting histogram of allowed scattering angles is used as weight function.
机译：为了提高将差分散射截面与测量计数率相关联的准确性，当有限的目标和检测器（可能是光源）允许一定范围的散射角被接受时，我们开发了一种权衡d sigma角度变化的方法/ d OMEGA。蒙特卡洛代码生成可能的散射角的分布，模拟从源到目标再到检测器的所有允许轨迹。方向是均匀分布的，因此除了由于几何形状（源，目标和检测器的位置和尺寸以及光束的所有准直）引起的物理约束外，没有施加先验的物理约束。所得的允许散射角直方图用作权重函数。

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