MEASUREMENT AND MODELING OF SCATTER RATIOS AT HIGH ENERGIES
MEASUREMENT AND MODELING OF SCATTER RATIOS AT HIGH ENERGIES
复制标题
高能量散射比的测量和建模
DOI：
10.1063/1.3591895
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发表时间：
2011
影响因子：
4.6
通讯作者：
W. Przybilla
中科院分区：
文献类型：
--
作者：
G. Jaenisch;A. Deresch;C. Bellon;U. Ewert;W. Przybilla
确定高能量 (>∼1 MeV) 下的散射比所面临的挑战在传统 X 射线能量下的测量中并不明显。这包括即使在重元素中也能减少衰减以及更强的前向散射偏置。为了检查不同测量设置在材料厚度、距离和准直方面的可靠性，使用蒙特卡罗模型分别模拟衰减和散射。模拟结果有助于了解散射到检测区域的辐射源，从而有助于消除不需要的贡献。
Determining scatter ratios at high energies (>∼1 MeV) presents challenges not immediately obvious from measurements at conventional X‐ray energies. This includes reduced attenuation even in heavy elements as well as a stronger forward bias of scattering. In order to check the reliability of different measurement setups with regard to material thicknesses, distances, and collimation, attenuation and scattering were separately simulated using a Monte Carlo model. The simulation results help in understanding the sources of radiation scattered into the detection area, thereby aiding in eliminating undesired contributions.