Estimation of the fractions of luminescence of water at higher energy than Cerenkov-light threshold for various types of radiation
Estimation of the fractions of luminescence of water at higher energy than Cerenkov-light threshold for various types of radiation
复制标题
估计各种类型辐射在高于切伦科夫光阈值的能量下水的发光分数
DOI：
10.1117/1.jbo.24.6.066005
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发表时间：
2019
影响因子：
3.5
通讯作者：
S. Yamamoto
中科院分区：
文献类型：
--
作者：
Y. Hirano;S. Yamamoto
抽象。虽然已经发现对于各种类型的辐射，水在比切伦科夫光（CL）阈值更低的能量下的发光，但是对于比CL阈值更高的能量下的辐射，水的发光占总产生的光的分数并不明显，因为难以分离这两种类型的光。因此，我们使用蒙特卡罗模拟来估计在比CL阈值更高的能量下各种类型的辐射的水的发光的分数，以确认所产生的光的主要成分。在确认水的发光的估计光产生能够充分模拟实验结果后，我们计算了这种发光的产生光子和水对质子（170 MeV）、碳离子（330 MeV/n）、来自直线加速器（LINAC）的高能X射线（6 MV）、来自LINAC的高能电子（9 MeV）、正电子（100 MeV）、来自LINAC的高能X射线（100 MeV）、来自LINAC的高能X（F-18、C-11、O-15和N-13）和高能伽马光子放射性核素（Co-60）。对于质子，所产生的光的主要部分是水的发光，除了CL从即时伽马光子产生的核相互作用。对于碳离子，所产生的光的主要部分是水的发光和CL产生的二次电子除了由核相互作用产生的即时伽马光子。对于高能X射线和LINAC电子，水的发光分数为约0.1%。 至0.2%。水对正电子的发光率为0.2%~ 1.5%，对Co-60的发光率为0.4%。我们的结论是，从X射线和电子LINAC，正电子放射性核素，和Co-60源产生的光的主要部分是CL，与水的发光分数从<0.1% 至1.5%。
Abstract. Although the luminescence of water at a lower energy than the Cerenkov-light (CL) threshold has been found for various types of radiation, the fractions of the luminescence of water to the total produced light have not been obvious for radiations at a higher energy than the CL threshold because it is difficult to separate these two types of light. Thus, we used a Monte Carlo simulation to estimate the fractions of the luminescence of water for various types of radiation at a higher energy than the CL threshold to confirm the major component of the produced light. After we confirmed that the estimated light production of the luminescence of water could adequately simulate the experimental results, we calculated the produced light photons of this luminescence and the CL from water for protons (170 MeV), carbon ions (330 MeV/n), high-energy x-ray (6 MV) from a linear accelerator (LINAC), high-energy electrons (9 MeV) from LINAC, positrons (F-18, C-11, O-15, and N-13), and high-energy gamma photon radionuclides (Co-60). For protons, the major fraction of the produced light was the luminescence of water in addition to the CL from the prompt gamma photons produced by the nuclear interactions. For carbon ions, the major fraction of the produced light was the luminescence of water and the CL produced by the secondary electrons in addition to the prompt gamma photons produced by the nuclear interactions. For high-energy x-ray and electrons from LINAC, the fractions of luminescence of water were ∼0.1 % to 0.2%. The fractions of luminescence of water for positrons were 0.2% to 1.5% and that for Co-60 was 0.4%. We conclude that the major fractions of light produced from x-ray and electrons from LINAC, positron radionuclides, and the Co-60 source are CL, with fractions of the luminescence of water from <0.1 % to 1.5%.
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影响因子：
3.5
作者：
Liu, Hongguang;Ren, Gang;Cheng, Zhen
通讯作者：
Cheng, Zhen
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