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Title: Collisionless electrostatic shock generation and ion acceleration by ultraintense laser pulses in overdense plasmas

Abstract

Collisionless electrostatic shock (CES) generation and subsequent ion acceleration in laser plasma interaction are studied numerically by particle-in-cell simulations. Usually a CES is composed of a high ion density spike surrounded by a bipolar electric field. Ions in front of it can be either submerged or reflected by the shock front. The submerged ions experience few oscillations before becoming part of the shock itself, while the reflected ions are accelerated to twice the shock speed. The effects of the target thickness, density, ion mass, preplasma conditions, as well as the laser intensity on the shock generation are examined. Simulations show that such shocks can be formed in a wide range of laser and target conditions. The characteristic of the shock propagation through a plane interface between two targets with different properties is also investigated. These results are useful for future experimental studies of shock generation and acceleration.

Authors:
; ; ; ; ; ;  [1]
  1. Beijing National Laboratory of Condensed Matter Physcis, Institute of Physics, Beijing 100080 (China)
Publication Date:
OSTI Identifier:
20974998
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 5; Other Information: DOI: 10.1063/1.2722723; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; ELECTRIC FIELDS; INTERACTIONS; INTERFACES; ION DENSITY; IONS; LASERS; LIGHT TRANSMISSION; PLASMA; PLASMA DENSITY; PLASMA SIMULATION; PLASMA WAVES; PULSES; SHOCK WAVES; THICKNESS

Citation Formats

Chen Min, Sheng Zhengming, Dong Quanli, He Minqing, Li Yutong, Bari, Muhammad Abbas, and Zhang Jie. Collisionless electrostatic shock generation and ion acceleration by ultraintense laser pulses in overdense plasmas. United States: N. p., 2007. Web. doi:10.1063/1.2722723.
Chen Min, Sheng Zhengming, Dong Quanli, He Minqing, Li Yutong, Bari, Muhammad Abbas, & Zhang Jie. Collisionless electrostatic shock generation and ion acceleration by ultraintense laser pulses in overdense plasmas. United States. doi:10.1063/1.2722723.
Chen Min, Sheng Zhengming, Dong Quanli, He Minqing, Li Yutong, Bari, Muhammad Abbas, and Zhang Jie. Tue . "Collisionless electrostatic shock generation and ion acceleration by ultraintense laser pulses in overdense plasmas". United States. doi:10.1063/1.2722723.
@article{osti_20974998,
title = {Collisionless electrostatic shock generation and ion acceleration by ultraintense laser pulses in overdense plasmas},
author = {Chen Min and Sheng Zhengming and Dong Quanli and He Minqing and Li Yutong and Bari, Muhammad Abbas and Zhang Jie},
abstractNote = {Collisionless electrostatic shock (CES) generation and subsequent ion acceleration in laser plasma interaction are studied numerically by particle-in-cell simulations. Usually a CES is composed of a high ion density spike surrounded by a bipolar electric field. Ions in front of it can be either submerged or reflected by the shock front. The submerged ions experience few oscillations before becoming part of the shock itself, while the reflected ions are accelerated to twice the shock speed. The effects of the target thickness, density, ion mass, preplasma conditions, as well as the laser intensity on the shock generation are examined. Simulations show that such shocks can be formed in a wide range of laser and target conditions. The characteristic of the shock propagation through a plane interface between two targets with different properties is also investigated. These results are useful for future experimental studies of shock generation and acceleration.},
doi = {10.1063/1.2722723},
journal = {Physics of Plasmas},
number = 5,
volume = 14,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
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