Azimuthal asymmetry in collective electron dynamics in relativistically transparent laser-foil interactions

Ross Gray, David MacLellan, Bruno Izquierdo, Haydn Powell, David Carroll, C.D. Murphy, L.C. Stockhausen, Dean Rusby, G. Scott, R. Wilson, Nicola Booth, Dan Symes, S. Hawkes, R Torres, M. Borghesi, Paul McKenna

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Asymmetry in the collective dynamics of ponderomotively-driven electrons in the interaction of an ultraintense laser pulse with a relativistically transparent target is demonstrated experimentally. The 2D prole of the beam of accelerated electrons is shown to change from an ellipse aligned along the laser polarisation direction in the case of limited transparency, to a double-lobe structure aligned perpendicular to it when a significant fraction of the laser pulse co-propagates with the electrons. The temporally-resolved dynamics of the interaction are investigated via particle-in-cell simulations. The results provide new insight into the collective response of charged particles to intense laser fields over an extended interaction volume, which is important for a wide range of applications, and in particular for the development of promising new ultraintense laser-driven ion acceleration mechanisms involving ultrathin target foils.
LanguageEnglish
Article number093027
Number of pages11
JournalNew Journal of Physics
Volume16
DOIs
Publication statusPublished - 23 Sep 2014

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foils
asymmetry
lasers
electrons
interactions
ellipses
pulses
lobes
charged particles
polarization
cells
ions
simulation

Keywords

  • laser-plasma interaction
  • ion acceleration
  • charged particle dynamics

Cite this

Gray, Ross ; MacLellan, David ; Izquierdo, Bruno ; Powell, Haydn ; Carroll, David ; Murphy, C.D. ; Stockhausen, L.C. ; Rusby, Dean ; Scott, G. ; Wilson, R. ; Booth, Nicola ; Symes, Dan ; Hawkes, S. ; Torres, R ; Borghesi, M. ; McKenna, Paul. / Azimuthal asymmetry in collective electron dynamics in relativistically transparent laser-foil interactions. In: New Journal of Physics. 2014 ; Vol. 16.
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abstract = "Asymmetry in the collective dynamics of ponderomotively-driven electrons in the interaction of an ultraintense laser pulse with a relativistically transparent target is demonstrated experimentally. The 2D prole of the beam of accelerated electrons is shown to change from an ellipse aligned along the laser polarisation direction in the case of limited transparency, to a double-lobe structure aligned perpendicular to it when a significant fraction of the laser pulse co-propagates with the electrons. The temporally-resolved dynamics of the interaction are investigated via particle-in-cell simulations. The results provide new insight into the collective response of charged particles to intense laser fields over an extended interaction volume, which is important for a wide range of applications, and in particular for the development of promising new ultraintense laser-driven ion acceleration mechanisms involving ultrathin target foils.",
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author = "Ross Gray and David MacLellan and Bruno Izquierdo and Haydn Powell and David Carroll and C.D. Murphy and L.C. Stockhausen and Dean Rusby and G. Scott and R. Wilson and Nicola Booth and Dan Symes and S. Hawkes and R Torres and M. Borghesi and Paul McKenna",
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Gray, R, MacLellan, D, Izquierdo, B, Powell, H, Carroll, D, Murphy, CD, Stockhausen, LC, Rusby, D, Scott, G, Wilson, R, Booth, N, Symes, D, Hawkes, S, Torres, R, Borghesi, M & McKenna, P 2014, 'Azimuthal asymmetry in collective electron dynamics in relativistically transparent laser-foil interactions' New Journal of Physics, vol. 16, 093027. https://doi.org/10.1088/1367-2630/16/9/093027

Azimuthal asymmetry in collective electron dynamics in relativistically transparent laser-foil interactions. / Gray, Ross; MacLellan, David; Izquierdo, Bruno; Powell, Haydn; Carroll, David; Murphy, C.D.; Stockhausen, L.C.; Rusby, Dean; Scott, G.; Wilson, R.; Booth, Nicola; Symes, Dan; Hawkes, S.; Torres, R; Borghesi, M.; McKenna, Paul.

In: New Journal of Physics, Vol. 16, 093027, 23.09.2014.

Research output: Contribution to journalArticle

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T1 - Azimuthal asymmetry in collective electron dynamics in relativistically transparent laser-foil interactions

AU - Gray, Ross

AU - MacLellan, David

AU - Izquierdo, Bruno

AU - Powell, Haydn

AU - Carroll, David

AU - Murphy, C.D.

AU - Stockhausen, L.C.

AU - Rusby, Dean

AU - Scott, G.

AU - Wilson, R.

AU - Booth, Nicola

AU - Symes, Dan

AU - Hawkes, S.

AU - Torres, R

AU - Borghesi, M.

AU - McKenna, Paul

PY - 2014/9/23

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AB - Asymmetry in the collective dynamics of ponderomotively-driven electrons in the interaction of an ultraintense laser pulse with a relativistically transparent target is demonstrated experimentally. The 2D prole of the beam of accelerated electrons is shown to change from an ellipse aligned along the laser polarisation direction in the case of limited transparency, to a double-lobe structure aligned perpendicular to it when a significant fraction of the laser pulse co-propagates with the electrons. The temporally-resolved dynamics of the interaction are investigated via particle-in-cell simulations. The results provide new insight into the collective response of charged particles to intense laser fields over an extended interaction volume, which is important for a wide range of applications, and in particular for the development of promising new ultraintense laser-driven ion acceleration mechanisms involving ultrathin target foils.

KW - laser-plasma interaction

KW - ion acceleration

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