Symmetric and asymmetric shocked gas jets for laser-plasma experiments - Archive ouverte HAL Access content directly
Journal Articles Review of Scientific Instruments Year : 2021

Symmetric and asymmetric shocked gas jets for laser-plasma experiments

(1) , (1) , (1) , (1) , , (2) , (2) , (2) , (2) , (2) , (2) , (1)
1
2

Abstract

Shocks in supersonic flows offer both high density and sharp density gradients that are used, for instance, for gradient injection in laser-plasma accelerators. We report on a parametric study of oblique shocks created by inserting a straight axisymmetric section at the end of a supersonic “de Laval” nozzle. The effect of different parameters, such as the throat diameter and straight section length on the shock position and density, is studied through computational fluid dynamics (CFD) simulations. Experimental characterizations of a shocked nozzle are compared to CFD simulations and found to be in good agreement. We then introduce a newly designed asymmetric shocked gas jet, where the straight section is only present on one lateral side of the nozzle, thus providing a gas profile well adapted for density transition injection. In this case, full-3D fluid simulations and experimental measurements are compared and show excellent agreement.
Fichier principal
Vignette du fichier
Shocked_jets_resub0507.pdf (1.94 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03419506 , version 1 (09-11-2021)

Identifiers

Cite

L Rovige, J Huijts, A Vernier, I Andriyash, F Sylla, et al.. Symmetric and asymmetric shocked gas jets for laser-plasma experiments. Review of Scientific Instruments, 2021, 92 (8), pp.083302. ⟨10.1063/5.0051173⟩. ⟨hal-03419506⟩
19 View
54 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More