质子初始位置对激光平面靶相互作用加速质子的影响(英)

为了更细致地理解鞘场质子加速机制，应用2维数值模拟程序Flips2D研究了质子的初始位置对加速以后质子束特性的影响。数值模拟结果表明:质子的初始位置对质子束特性的影响非常明显。质子的出射角与其在横向的初始位置有关，初始位置离激光轴越远，其出射角越大。

Effect of proton initial locations on proton acceleration by interaction of laser and plain target

For further understanding of the proton acceleration by target normal sheath acceleration (TNSA), the effect of the proton initial locations on the quality of the proton beam is investigated by two-dimensional particle-in-cell (2D-PIC) code Flips2D. The simulation results show that the effect of the proton initial locations on the proton quality is very significant. The divergence of protons is related to their initial locations in transverse direction. The farther away the protons is from the laser axis, the larger the proton divergence can be received.