Mitigating the hosing instability in relativistic laser-plasma interactions
Mitigating the hosing instability in relativistic laser-plasma interactions
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DOI：
10.1088/1367-2630/18/5/053023
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发表时间：
2016-05-12
影响因子：
3.3
通讯作者：
Norreys, P. A.
中科院分区：
文献类型：
--
作者：
Ceurvorst, L.;Ratan, N.;Norreys, P. A.
本文提出了一个新的包含相对论激光脉冲和中等密度的Hosing不稳定性物理模型，并导出了Hosing方程的密度依赖性。这是测试对二维粒子在细胞模拟。这些模拟进一步研究了使用多个脉冲来减轻钕玻璃型参数空间中的软管不稳定性的可行性。平面与圆柱指数密度梯度的影响，软管不稳定性的检查也提出。结果表明，强相对论脉冲和更平面的几何结构能够减轻软管不稳定性，这是符合物理模型的预测。
A new physical model of the hosing instability that includes relativistic laser pulses and moderate densities is presented and derives the density dependence of the hosing equation. This is tested against two-dimensional particle-in-cell simulations. These simulations further examine the feasibility of using multiple pulses to mitigate the hosing instability in a Nd:glass-type parameter space. An examination of the effects of planar versus cylindrical exponential density gradients on the hosing instability is also presented. The results show that strongly relativistic pulses and more planar geometries are capable of mitigating the hosing instability which is in line with the predictions of the physical model.