纳米双层靶高质量离子束及其在强子治疗中的应用
High-quality ion beams from a nanometric double-layer target and their application to hadron-therapy
摘要：
讨论了在激光辐射压力作用下，圆偏振激光脉冲与纳米双层靶相互作用产生离子束的情况。准单色，良好的准直离子束中观察到的二维粒子在细胞模拟。从一个简单的解析模型导出了离子束的特性，并讨论了利用具有陡上升沿的激光脉冲来控制这些特性的可能性。最后考虑了强子疗法的潜在应用。
英文摘要：
The production of ion beams from the interaction of a circularly polarized laser pulse with a nanometric double-layer target is discussed in the regime where all electrons are expelled from the target by laser radiation pressure. Quasi-monochromatic, well-collimated ion beams are observed in two-dimensional particle-in-cell simulations. The ion beam properties are derived from a simple analytical model, and the possibility to control those properties by using a laser-pulse with sharp-rising edge is discussed. Potential application to hadron-therapy is finally considered.
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