Electron surface acceleration on a solid capillary target inner wall irradiated with ultraintense laser pulses
Electron surface acceleration on a solid capillary target inner wall irradiated with ultraintense laser pulses
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DOI：
10.1063/1.2731383
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发表时间：
2007-05
影响因子：
2.2
通讯作者：
Tatsufumi Nakamura;K. Mima;H. Sakagami;T. Johzaki
中科院分区：
文献类型：
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作者：
Tatsufumi Nakamura;K. Mima;H. Sakagami;T. Johzaki
当强激光脉冲以大角度入射到固体靶上时，会产生准静态磁场和电场，将电子沿着靶面限制在静电势阱和矢量势阱中。在这种情况下，电子通过势阱内的激光电场沿表面被共振加速沿着。通过这种表面加速过程，有效地产生了高能量电子，其温度远远超过有质动能。给出了实现表面加速的最佳条件及其能量标度。毛细管型目标显示出在利用表面加速过程中，通过增加相互作用长度的优势。
When ultraintense laser pulses irradiate solid targets with a large incident angle, quasistatic magnetic and electric fields are induced, which confine electrons along the target surface in an electrostatic and vector potential well. In this case, electrons are resonantly accelerated along the surface by laser electric field inside the potential well. By this surface acceleration process, high energy electrons are effectively generated whose temperature well exceeds the ponderomotive energy. The optimum conditions for realizing surface acceleration and its energy scalings are given. Capillary type targets are shown to have an advantage in utilizing the surface acceleration process by increasing the interaction length.