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Title: A gas-dynamical approach to radiation pressure acceleration

Abstract

The study of high intensity ion beams driven by high power pulsed lasers is an active field of research. Of particular interest is the radiation pressure acceleration, for which simulations predict narrow band ion energies up to GeV. We derive a laser-piston model by applying techniques for non-relativistic gas-dynamics. The model reveals a laser intensity limit, below which sufficient laser-piston acceleration is impossible. The relation between target thickness and piston velocity as a function of the laser pulse length yields an approximation for the permissible target thickness. We performed one-dimensional Particle-In-Cell simulations to confirm the predictions of the analytical model. These simulations also reveal the importance of electromagnetic energy transport. We find that this energy transport limits the achievable compression and rarefies the plasma.

Authors:
 [1];  [1];  [2]
  1. Technische Universität Darmstadt, Accelerator Physics Group, Schlossgartenstr. 8, 64289 Darmstadt (Germany)
  2. (Germany)
Publication Date:
OSTI Identifier:
22600134
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; APPROXIMATIONS; COMPRESSION; FORECASTING; GEV RANGE; ION BEAMS; IONS; LASERS; LENGTH; ONE-DIMENSIONAL CALCULATIONS; PARTICLES; PISTONS; PLASMA; PULSES; RADIATION PRESSURE; RELATIVISTIC RANGE; SIMULATION; THICKNESS

Citation Formats

Schmidt, Peter, E-mail: schmidt@temf.tu-darmstadt.de, Boine-Frankenheim, Oliver, and GSI Helmholtzzentrum für Schwerionenforschung GmbH, Beam Physics Department, Planckstr. 1, 64291 Darmstadt. A gas-dynamical approach to radiation pressure acceleration. United States: N. p., 2016. Web. doi:10.1063/1.4952623.
Schmidt, Peter, E-mail: schmidt@temf.tu-darmstadt.de, Boine-Frankenheim, Oliver, & GSI Helmholtzzentrum für Schwerionenforschung GmbH, Beam Physics Department, Planckstr. 1, 64291 Darmstadt. A gas-dynamical approach to radiation pressure acceleration. United States. doi:10.1063/1.4952623.
Schmidt, Peter, E-mail: schmidt@temf.tu-darmstadt.de, Boine-Frankenheim, Oliver, and GSI Helmholtzzentrum für Schwerionenforschung GmbH, Beam Physics Department, Planckstr. 1, 64291 Darmstadt. Wed . "A gas-dynamical approach to radiation pressure acceleration". United States. doi:10.1063/1.4952623.
@article{osti_22600134,
title = {A gas-dynamical approach to radiation pressure acceleration},
author = {Schmidt, Peter, E-mail: schmidt@temf.tu-darmstadt.de and Boine-Frankenheim, Oliver and GSI Helmholtzzentrum für Schwerionenforschung GmbH, Beam Physics Department, Planckstr. 1, 64291 Darmstadt},
abstractNote = {The study of high intensity ion beams driven by high power pulsed lasers is an active field of research. Of particular interest is the radiation pressure acceleration, for which simulations predict narrow band ion energies up to GeV. We derive a laser-piston model by applying techniques for non-relativistic gas-dynamics. The model reveals a laser intensity limit, below which sufficient laser-piston acceleration is impossible. The relation between target thickness and piston velocity as a function of the laser pulse length yields an approximation for the permissible target thickness. We performed one-dimensional Particle-In-Cell simulations to confirm the predictions of the analytical model. These simulations also reveal the importance of electromagnetic energy transport. We find that this energy transport limits the achievable compression and rarefies the plasma.},
doi = {10.1063/1.4952623},
journal = {Physics of Plasmas},
number = 6,
volume = 23,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}