Signatures of fluid and kinetic properties in the energy distributions of multicharged Ta ions from nanosecond-laser-heated plasma

F. Gobet, M. Comet, J.-R. Marquès, V. Méot, X. Raymond, M. Versteegen, J.-L. Henares, and O. Morice
Phys. Rev. E 98, 063202 – Published 10 December 2018

Abstract

The energy distributions of tantalum ions produced in a nanosecond laser-heated plasma at 4×1015W/cm2 are experimentally and theoretically investigated. They are measured far from the target with an electrostatic spectrometer and charge collectors. Shadowgraphy and interferometry are used to characterize the plasma dynamics in the first nanoseconds of the plasma expansion for electron densities ranging from 1018 to 1020cm3. The experimental data clearly show two components in the energy distributions which depend on the ion charge states. These components are discussed in light of fluid and kinetic descriptions of the expanding plasma. In particular, quantitative comparisons with calculations performed with three-dimensional hydrodynamic (Troll) and 1D3V particle-in cell-codes demonstrate that a double layer created at the plasma-vacuum interface plays a crucial role in the acceleration of the highest-charge-state ions at high energy.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
8 More
  • Received 16 July 2018

DOI:https://doi.org/10.1103/PhysRevE.98.063202

©2018 American Physical Society

Physics Subject Headings (PhySH)

Plasma Physics

Authors & Affiliations

F. Gobet1,*, M. Comet2, J.-R. Marquès3, V. Méot2, X. Raymond1, M. Versteegen1, J.-L. Henares1, and O. Morice2

  • 1Université Bordeaux, CNRS-IN2P3, CENBG, F-33175 Gradignan, France
  • 2CEA, DAM-DIF, F-91297 Arpajon, France
  • 3LULI-CNRS, École Polytechnique, CEA, Université Paris-Saclay, Sorbonne Universités, F-91128 Palaiseau cedex, France

  • *gobet@cenbg.in2p3.fr

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 98, Iss. 6 — December 2018

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review E

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×