Instability of a thin conducting foil accelerated by a finite wavelength intense laser

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We derive a theoretical model for the Rayleigh-Taylor (RT)-like instability for a thin foil accelerated by an intense laser, taking into account finite wavelength effects in the laser wave field. The latter leads to the diffraction of the electromagnetic wave off the periodic structures arising from the instability of the foil, which significantly modifies the growth rate of the RT-like instability when the perturbations on the foil have wavenumbers comparable to or larger than the laser wavenumber. In particular, the growth rate has a local maximum at a perturbation wavenumber approximately equal to the laser wavenumber.
The standard RT instability, arising from a pressure difference between the two sides of a foil, is approximately recovered for perturbation wavenumbers smaller than the laser wavenumber. Differences in the results for circular and linear polarization of the laser light are pointed out. The model has significance to radiation pressure acceleration of thin foils, where RT-like instabilities are significant obstacles.
LanguageEnglish
Article number033026
Number of pages7
JournalNew Journal of Physics
Volume17
Issue number3
DOIs
Publication statusPublished - 12 Mar 2015

Fingerprint

foils
Taylor instability
conduction
wavelengths
lasers
perturbation
radiation pressure
circular polarization
linear polarization
electromagnetic radiation
diffraction

Keywords

  • thin foil
  • finite wavelength intense laser
  • conducting foil
  • Rayleigh-Taylor instability

Cite this

@article{59ab941e23894d89bcc9fa8370a14222,
title = "Instability of a thin conducting foil accelerated by a finite wavelength intense laser",
abstract = "We derive a theoretical model for the Rayleigh-Taylor (RT)-like instability for a thin foil accelerated by an intense laser, taking into account finite wavelength effects in the laser wave field. The latter leads to the diffraction of the electromagnetic wave off the periodic structures arising from the instability of the foil, which significantly modifies the growth rate of the RT-like instability when the perturbations on the foil have wavenumbers comparable to or larger than the laser wavenumber. In particular, the growth rate has a local maximum at a perturbation wavenumber approximately equal to the laser wavenumber.The standard RT instability, arising from a pressure difference between the two sides of a foil, is approximately recovered for perturbation wavenumbers smaller than the laser wavenumber. Differences in the results for circular and linear polarization of the laser light are pointed out. The model has significance to radiation pressure acceleration of thin foils, where RT-like instabilities are significant obstacles.",
keywords = "thin foil, finite wavelength intense laser, conducting foil, Rayleigh-Taylor instability",
author = "B Eliasson",
year = "2015",
month = "3",
day = "12",
doi = "10.1088/1367-2630/17/3/033026",
language = "English",
volume = "17",
journal = "New Journal of Physics",
issn = "1367-2630",
number = "3",

}

Instability of a thin conducting foil accelerated by a finite wavelength intense laser. / Eliasson, B.

In: New Journal of Physics, Vol. 17, No. 3, 033026, 12.03.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Instability of a thin conducting foil accelerated by a finite wavelength intense laser

AU - Eliasson, B

PY - 2015/3/12

Y1 - 2015/3/12

N2 - We derive a theoretical model for the Rayleigh-Taylor (RT)-like instability for a thin foil accelerated by an intense laser, taking into account finite wavelength effects in the laser wave field. The latter leads to the diffraction of the electromagnetic wave off the periodic structures arising from the instability of the foil, which significantly modifies the growth rate of the RT-like instability when the perturbations on the foil have wavenumbers comparable to or larger than the laser wavenumber. In particular, the growth rate has a local maximum at a perturbation wavenumber approximately equal to the laser wavenumber.The standard RT instability, arising from a pressure difference between the two sides of a foil, is approximately recovered for perturbation wavenumbers smaller than the laser wavenumber. Differences in the results for circular and linear polarization of the laser light are pointed out. The model has significance to radiation pressure acceleration of thin foils, where RT-like instabilities are significant obstacles.

AB - We derive a theoretical model for the Rayleigh-Taylor (RT)-like instability for a thin foil accelerated by an intense laser, taking into account finite wavelength effects in the laser wave field. The latter leads to the diffraction of the electromagnetic wave off the periodic structures arising from the instability of the foil, which significantly modifies the growth rate of the RT-like instability when the perturbations on the foil have wavenumbers comparable to or larger than the laser wavenumber. In particular, the growth rate has a local maximum at a perturbation wavenumber approximately equal to the laser wavenumber.The standard RT instability, arising from a pressure difference between the two sides of a foil, is approximately recovered for perturbation wavenumbers smaller than the laser wavenumber. Differences in the results for circular and linear polarization of the laser light are pointed out. The model has significance to radiation pressure acceleration of thin foils, where RT-like instabilities are significant obstacles.

KW - thin foil

KW - finite wavelength intense laser

KW - conducting foil

KW - Rayleigh-Taylor instability

UR - http://iopscience.iop.org/1367-2630

U2 - 10.1088/1367-2630/17/3/033026

DO - 10.1088/1367-2630/17/3/033026

M3 - Article

VL - 17

JO - New Journal of Physics

T2 - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 3

M1 - 033026

ER -