Numerical modeling of fast electron generation in the presence of preformed plasma in laser-matter interaction at relativistic intensities

被引：63

作者：

Paradkar, B. S. ^{[1
]}

Wei, M. S. ^{[2
]}

Yabuuchi, T. ^{[1
]}

Stephens, R. B. ^{[2
]}

Haines, M. G. ^{[3
]}

Krasheninnikov, S. I. ^{[1
]}

Beg, F. N. ^{[1
]}

机构：

[1] Univ Calif San Diego, La Jolla, CA 92093 USA

[2] Gen Atom Co, San Diego, CA 92186 USA

[3] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

来源：

PHYSICAL REVIEW E | 2011年 / 83卷 / 04期

关键词：

SOLID INTERACTIONS; SIMULATION;

D O I：

10.1103/PhysRevE.83.046401

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：

Fast electron generation in the presence of coronal plasma in front of a solid target (typically referred to as preformed plasma) in laser-matter interaction in the intensity range of 10(19)-10(21) W/cm(2) is studied in a one-dimensional slab approximation with particle-in-cell (PIC) simulations. Three different preformed plasma density scale lengths of 1, 5, and 15 mu m are considered. We report an increase in both mean and maximum energy of generated fast electrons with an increase in the preformed plasma scale length (in the range 1-15 mu m). The heating of plasma electrons is predominantly due to their stochastic motion in counterpropagating electromagnetic (EM) waves (incident and reflected waves) and the presence of a longitudinal electric field produced self-consistently inside the preformed plasma. The synergetic effects of this longitudinal electric field and EM waves responsible for the efficient preformed plasma electrons heating are discussed.

引用

页数：10

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[21] Simulation techniques for heavy ion fusion chamber transport [J].