Angular dependencies of Cerenkov-light in water for carbon-ion, high energy x-ray and electron
Angular dependencies of Cerenkov-light in water for carbon-ion, high energy x-ray and electron
复制标题
切伦科夫光在水中对碳离子、高能 X 射线和电子的角度依赖性
DOI：
10.1088/2057-1976/ab05b0
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发表时间：
2019
影响因子：
1.4
通讯作者：
S. Yamamoto
中科院分区：
文献类型：
--
作者：
Y. Hirano;S. Yamamoto
由于切伦科夫光在水中的电子的阈值能量（~ 260 keV）以上发射并且向前发射，因此光强度分布与来自LINAC的X射线和电子的剂量不同。在碳离子的深度分布中也观察到了切伦科夫光分量。然而，切伦科夫光分布的角度依赖性并不明显。因此，我们使用蒙特卡罗模拟计算了240 MeV n−1碳离子、6 MV x射线和9 MeV电子的深度分布。通过与实测结果的比较，验证了模拟的准确性，并计算了水和切伦科夫光在不同角度下的发光深度分布。利用模拟结果，很明显，深度轮廓随着包含切伦科夫光的所产生的光的角度而显著不同。切连科夫光分量在较大的角度高得多。我们还发现，对于6 MV X射线，与射束方向的直角成10度角的剂量的深度分布几乎相同。
Because Cerenkov light is emitted above the threshold energy of the electrons (∼260 keV) in water and is emitted to forward directions, the light intensity distributions are different from the dose for x-ray and electron from LINAC. Cerenkov-light component was also observed with the depth profiles in carbon-ion. However the angular dependencies of the Cerenkov-light distributions were not obvious. Thus we calculated the depth profiles of the produced light distributions for 240 MeV n−1 carbon-ion, 6 MV x-ray, and 9 MeV electrons using Monte Carlo simulation. After we confirmed the simulation accuracies by comparing with the measured results, we calculated the depth profiles of luminescence of water and Cerenkov-light with various angles for these three types of radiations. With the simulation results, it became obvious that the depth profiles were significantly different with the angles for the produced light containing the Cerenkov-light. Cerenkov-light components were much higher at the larger angles. We also found the almost identical depth profile to dose with the angle of 10 degree to the right angle of the beam direction for 6 MV x-ray.
影响因子：
3.6
作者：
Glaser AK;Zhang R;Davis SC;Gladstone DJ;Pogue BW
通讯作者：
Pogue BW
影响因子：
3.6
作者：
Glaser AK;Voigt WH;Davis SC;Zhang R;Gladstone DJ;Pogue BW
通讯作者：
Pogue BW
切连科夫利用外部光束辐射激发荧光断层扫描。
影响因子：
3.6
作者：
Demers JL;Davis SC;Zhang R;Gladstone DJ;Pogue BW
通讯作者：
Pogue BW