Ion acceleration from laser-driven electrostatic shocks

被引：88

作者：

Fiuza, F. ^{[1
]}

Stockem, A. ^{[1
]}

Boella, E. ^{[1
,3
]}

Fonseca, R. A. ^{[1
,4
]}

Silva, L. O. ^{[1
]}

Haberberger, D. ^{[2
]}

Tochitsky, S. ^{[2
]}

Mori, W. B. ^{[2
]}

Joshi, C. ^{[2
]}

机构：

[1] Inst Super Tecn, Lab Associado, Inst Plasmas & Fusao Nucl, GoLP, P-1049001 Lisbon, Portugal

[2] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

[3] Politecn Torino, Dipartimento Energia, I-10129 Turin, Italy

[4] Inst Univ Lisboa, ISCTE, DCTI, P-1649026 Lisbon, Portugal

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 05期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

ELECTROMAGNETIC-WAVES; ABSORPTION; BEAMS;

D O I：

10.1063/1.4801526

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Multi-dimensional particle-in-cell simulations are used to study the generation of electrostatic shocks in plasma and the reflection of background ions to produce high-quality and high-energy ion beams. Electrostatic shocks are driven by the interaction of two plasmas with different density and/or relative drift velocity. The energy and number of ions reflected by the shock increase with increasing density ratio and relative drift velocity between the two interacting plasmas. It is shown that the interaction of intense lasers with tailored near-critical density plasmas allows for the efficient heating of the plasma electrons and steepening of the plasma profile at the critical density interface, leading to the generation of high-velocity shock structures and high-energy ion beams. Our results indicate that high-quality 200 MeV shock-accelerated ion beams required for medical applications may be obtained with current laser systems. (C) 2013 AIP Publishing LLC

引用

页数：12

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