Spatiotemporal dynamics of ultrarelativistic beam-plasma instabilities

被引:13
|
作者
Claveria, P. San Miguel [1 ]
Davoine, X. [2 ,3 ]
Peterson, J. R. [4 ,5 ]
Gilljohann, M. [1 ]
Andriyash, I [1 ]
Ariniello, R. [6 ]
Clarke, C. [4 ]
Ekerfelt, H. [4 ]
Emma, C. [4 ]
Faure, J. [2 ,3 ]
Gessner, S. [4 ]
Hogan, M. J. [4 ]
Joshi, C. [7 ]
Keitel, C. H. [8 ]
Knetsch, A. [1 ]
Kononenko, O. [1 ]
Litos, M. [6 ]
Mankovska, Y. [1 ]
Marsh, K. [7 ]
Matheron, A. [1 ]
Nie, Z. [7 ]
O'Shea, B. [4 ]
Storey, D. [4 ]
Vafaei-Najafabadi, N. [9 ]
Wu, Y. [7 ]
Xu, X. [4 ]
Yan, J. [9 ]
Zhang, C. [7 ]
Tamburini, M. [8 ]
Fiuza, F. [4 ]
Gremillet, L. [2 ,3 ]
Corde, S. [1 ]
机构
[1] Inst Polytech Paris, Ecole Polytech, CNRS, LOA,ENSTA Paris, F-91762 Palaiseau, France
[2] CEA, DAM, DIF, F-91297 Arpajon, France
[3] Univ Paris Saclay, CEA, LMCE, F-91680 Bruyeres Le Chatel, France
[4] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
[5] Stanford Univ, Phys Dept, Stanford, CA 94305 USA
[6] Univ Colorado, Dept Phys, Ctr Integrated Plasma Studies, Boulder, CO 80309 USA
[7] Univ Calif Los Angeles, Los Angeles, CA 90095 USA
[8] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany
[9] SUNY Stony Brook, Stony Brook, NY 11794 USA
来源
PHYSICAL REVIEW RESEARCH | 2022年 / 4卷 / 02期
基金
美国国家科学基金会; 欧洲研究理事会;
关键词
PARTICLE-ACCELERATION; EVOLUTION; ELECTRON; SHOCKS;
D O I
10.1103/PhysRevResearch.4.023085
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
An electron or electron-positron beam streaming through a plasma is notoriously prone to microinstabilities. For a dilute ultrarelativistic infinite beam, the dominant instability is a mixed mode between longitudinal two-stream and transverse filamentation modes, with a phase velocity oblique to the beam velocity. A spatiotemporal theory describing the linear growth of this oblique mixed instability is proposed which predicts that spatiotemporal effects generally prevail for finite-length beams, leading to a significantly slower instability evolution than in the usually assumed purely temporal regime. These results are accurately supported by particle-in-cell (PIC) simulations. Furthermore, we show that the self-focusing dynamics caused by the plasma wakefields driven by finite-width beams can compete with the oblique instability. Analyzed through PIC simulations, the interplay of these two processes in realistic systems bears important implications for upcoming accelerator experiments on ultrarelativistic beam-plasma interactions.
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页数:7
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