Generation of High-Current Proton Beams With a Low Energy Spread by Phase-Stable Acceleration (PSA)
Generation of High-Current Proton Beams With a Low Energy Spread by Phase-Stable Acceleration (PSA)
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DOI：
10.1109/tps.2008.927161
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发表时间：
2008-08
影响因子：
1.5
通讯作者：
B. Liu;Z. He;X.Q. Yan;Z. Sheng;Z.Y. Guo;Y.R. Lu;J. Chen
中科院分区：
文献类型：
--
作者：
B. Liu;Z. He;X.Q. Yan;Z. Sheng;Z.Y. Guo;Y.R. Lu;J. Chen
研究了圆偏振激光脉冲与薄箔相互作用中质子的加速问题。对于圆偏振激光脉冲，由于光压和在激光脉冲相互作用前沿形成的静电场，建立了电子的准平衡。位于激光脉冲皮肤深度内的质子可以像常规射频加速器中的稳相加速一样被同步加速和集束，从而产生能量分散小的大电流质子束。这一点已经通过一维粒子模拟得到了验证。
The acceleration of protons in the interaction of a circularly polarized laser pulse with a thin foil is investigated. For circular-polarization laser pulses, the quasi-equilibrium for electrons is established due to the light pressure and the electrostatic field built up at the interacting front of the laser pulse. The protons located within the skin depth of the laser pulse can be synchronously accelerated and bunched like phase-stable acceleration in a conventional radio-frequency accelerator, so that a high-current proton beam with a low energy spread is generated. It has been proved by 1-D particle-in-cell simulations.