Shock ion acceleration by an ultrashort circularly polarized laser pulse via relativistic transparency in an exploded target

被引：19

作者：

Kim, Young-Kuk ^{[1
]}

Cho, Myung-Hoon ^{[2
]}

Song, Hyung Seon ^{[3
]}

Kang, Teyoun ^{[3
]}

Park, Hyung Ju ^{[4
]}

Jung, Moon Youn ^{[4
]}

Hur, Min Sup ^{[3
]}

机构：

[1] UNIST, Sch Elect & Comp Engn, Ulsan 689798, South Korea

[2] IBS, Ctr Relativist Laser Sci, Kwangju 500712, South Korea

[3] UNIST, Sch Nat Sci, Ulsan 689798, South Korea

[4] Elect & Telecommun Res Inst, Biomed Team, Daejeon 305700, South Korea

来源：

PHYSICAL REVIEW E | 2015年 / 92卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

COLLISIONLESS SHOCKS; PROTON ACCELERATION; DRIVEN; IMPLANTATION; BEAMS;

D O I：

10.1103/PhysRevE.92.043102

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：

We investigated ion acceleration by an electrostatic shock in an exploded target irradiated by an ultrashort, circularly polarized laser pulse by means of one- and three-dimensional particle-in-cell simulations. We discovered that the laser field penetrating via relativistic transparency (RT) rapidly heated the upstream electron plasma to enable the formation of a high-speed electrostatic shock. Owing to the RT-based rapid heating and the fast compression of the initial density spike by a circularly polarized pulse, a new regime of the shock ion acceleration driven by an ultrashort (20-40 fs), moderately intense (1-1.4 PW) laser pulse is envisaged. This regime enables more efficient shock ion acceleration under a limited total pulse energy than a linearly polarized pulse with crystal laser systems of lambda similar to 1 mu m.

引用

页数：6

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