论文标题
电子在周期性固态结构上的分段加速度被激光脉冲照射
Piecewise acceleration of electrons across a periodic solid-state structure irradiated by intense laser pulse
论文作者
论文摘要
三维粒子中的粒子模拟表明，周期性的固态结构被激烈（$ \ sim 10^{19} $ w/cm $ {}^2 $）激光脉冲脉冲可以产生准直的电子束，并具有高达30 meV的能量（以及高达30 meV的梯度（以及均为11..5 $ geev的加速度梯度），如果是平衡的，则为乘以划分的量，划分为乘以乘以划分。提出了微观结构中的分段加速度的一维模型，并且与数值模拟的结果非常吻合。它表明，相对论电子的加速过程在理论上是无限的。在模拟中，确定了最佳目标参数（微结构元素和微结构周期的宽度）。探索的参数可用于原理证明实验，证明了许多相同和相互一致的激光脉冲的超高梯度加速度[A. Pukhov等人，Eur。物理。 J.规格。顶部。 223，1197（2014）]。
Three-dimensional particle-in-cell simulations show that the periodic solid-state structures irradiated by intense ($\sim 10^{19}$ W/cm${}^2$) laser pulses can generate collimated electron bunches with energies up to 30 MeV (and acceleration gradient of $11.5$ GeV/cm), if the microstructure period is equal to the laser wavelength. A one-dimensional model of piecewise acceleration in the microstructure is proposed and it is in a good agreement with the results of numerical simulations. It shows that the acceleration process for relativistic electrons can be theoretically infinite. In the simulations, the optimal target parameters (the width of the microstructure elements and the microstructure period) are determined. The explored parameters can be used for proof-of-principle experiments demonstrating an ultrahigh gradient acceleration by a number of identical and mutually coherent laser pulses [A. Pukhov et al., Eur. Phys. J. Spec. Top. 223, 1197 (2014)].
