Wakefields in a cluster plasma
Wakefields in a cluster plasma
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DOI：
10.1103/physrevaccelbeams.22.113501
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发表时间：
2019-11
影响因子：
1.7
通讯作者：
M. Mayr;L. Ceurvorst;M. Kasim;J. Sadler;B. Spiers;K. Glize;A. Savin;N. Bourgeois;F. Keeble;A. J. Ross;D. Symes;R. Aboushelbaya;R. Fonseca;J. Holloway;N. Ratan;R. Trines;Robin H. W. Wang;R. Bingham;L. Silva;P. Burrows;M. Wing;P. Rajeev;P. Norreys
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文献类型：
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作者：
M. Mayr;L. Ceurvorst;M. Kasim;J. Sadler;B. Spiers;K. Glize;A. Savin;N. Bourgeois;F. Keeble;A. J. Ross;D. Symes;R. Aboushelbaya;R. Fonseca;J. Holloway;N. Ratan;R. Trines;Robin H. W. Wang;R. Bingham;L. Silva;P. Burrows;M. Wing;P. Rajeev;P. Norreys
我们报告了在纳米级团簇等离子体中首次全面研究的大振幅朗缪尔波。利用斜角度单次频域全息诊断，首次捕获了这些尾流场的形状。与均匀等离子体中尾流场的正向曲率相反，波前被观察到向后弯曲。由于集群的扩展，第一个尾流场周期比后面的尾流场周期长。通过完全相对论的二维细胞内粒子模拟和系团等离子体一维非线性尾流场的准解析解，可以很好地描述数据的特征。
We report the first comprehensive study of large amplitude Langmuir waves in a plasma of nanometer-scale clusters. Using an oblique angle single-shot frequency domain holography diagnostic, the shape of these wakefields is captured for the first time. The wavefronts are observed to curve backwards, in contrast to the forwards curvature of wakefields in uniform plasma. Due to the expansion of the clusters, the first wakefield period is longer than those trailing it. The features of the data are well described by fully relativistic two-dimensional particle-in-cell simulations and by a quasianalytic solution for a one-dimensional, nonlinear wakefield in a cluster plasma.