Particle in cell simulation of laser-accelerated proton beams for radiation therapy
Particle in cell simulation of laser-accelerated proton beams for radiation therapy
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DOI：
10.1118/1.1521122
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发表时间：
2002-12-01
期刊：
影响因子：
3.8
通讯作者：
Ma, CM
中科院分区：
文献类型：
--
作者：
Fourkal, E;Shahine, B;Ma, CM
在这篇文章中，我们提出了粒子在细胞（PIC）模拟的结果，激光等离子体相互作用的质子加速放射治疗。我们表明，在最佳的相互作用条件下，质子可以加速到相对论能量为300兆电子伏的拍瓦激光场。质子加速是由于强激光的有质动力压（光压）引起电荷分离产生的库仑拖曳力。从PIC模拟得到的质子能量和相空间分布函数中使用的剂量分布的计算使用GEANT蒙特卡罗模拟代码。由于质子的宽能量和角谱，将需要紧凑的粒子选择和束准直系统来产生用于强度调制质子治疗的多能质子的小束。(C)2002年美国医学物理学家协会。
In this article we present the results of particle in cell (PIC) simulations of laser plasma interaction for proton acceleration for radiation therapy treatments. We show that under optimal interaction conditions protons can be accelerated up to relativistic energies of 300 MeV by a petawatt laser field. The proton acceleration is due to the dragging Coulomb force arising from charge separation induced by the ponderomotive pressure (light pressure) of high-intensity laser. The proton energy and phase space distribution functions obtained from the PIC simulations are used in the calculations of dose distributions using the GEANT Monte Carlo simulation code. Because of the broad energy and angular spectra of the protons, a compact particle selection and beam collimation system will be needed to generate small beams of polyenergetic protons for intensity modulated proton therapy. (C) 2002 American Association of Physicists in Medicine.