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Title: Highly Resolved Measurements of a Developing Strong Collisional Plasma Shock

Journal Article · · Physical Review Letters
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

In this paper, the structure of a strong collisional shock front forming in a plasma is directly probed for the first time in laser-driven gas-jet experiments. Thomson scattering of a 526.5 nm probe beam was used to diagnose temperature and ion velocity distribution in a strong shock ($$M{\sim}11$$) propagating through a low-density ($${\rho}{\sim}0.01\text{ }\text{ }\mathrm{mg}/\mathrm{cc}$$) plasma composed of hydrogen. A forward-streaming population of ions traveling in excess of the shock velocity was observed to heat and slow down on an unmoving, unshocked population of cold protons, until ultimately the populations merge and begin to thermalize. Finally, instabilities are observed during the merging, indicating a uniquely plasma-phase process in shock front formation.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
LLNL Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1438627
Alternate ID(s):
OSTI ID: 1423500; OSTI ID: 1466160
Report Number(s):
LLNL-JRNL-741313; LLNL-JRNL-755398; TRN: US1900472
Journal Information:
Physical Review Letters, Vol. 120, Issue 9; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

References (34)

Deciphering the kinetic structure of multi-ion plasma shocks journal November 2017
Study of self-generated fields in strongly-shocked, low-density systems using broadband proton radiography journal July 2017
Implementation of imaging Thomson scattering on the Omega Laser journal October 2006
Time-Resolved Characterization of the Formation of a Collisionless Shock journal May 2013
XV. On the thermodynamic theory of waves of finite longitudinal disturbance journal January 1870
Characterization of electrostatic shock in laser-produced optically-thin plasma flows using optical diagnostics journal July 2017
Thomson scattering diagnostic for the measurement of ion species fraction journal October 2012
Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility journal July 2016
The formation of reverse shocks in magnetized high energy density supersonic plasma flows journal May 2014
Experimental characterization of a transition from collisionless to collisional interaction between head-on-merging supersonic plasma jetsa) journal May 2015
Stopping and thermalization of interpenetrating plasma streams journal January 1991
Initial performance results of the OMEGA laser system journal January 1997
Studying astrophysical collisionless shocks with counterstreaming plasmas from high power lasers journal March 2012
Experimental Characterization of the Stagnation Layer between Two Obliquely Merging Supersonic Plasma Jets journal August 2013
Time Evolution of Collisionless Shock in Counterstreaming Laser-Produced Plasmas journal April 2011
Implementation of a high energy 4ω probe beam on the Omega laser journal October 2004
A reflective image-rotating periscope for spatially resolved Thomson-scattering experiments on OMEGA journal December 2013
Species separation and kinetic effects in collisional plasma shocks journal May 2014
Structure of a Plasma Shock Wave journal January 1964
Collisionless shock in a laser-produced ablating plasma journal August 1988
Shock-induced mix across an ideal interface journal April 2017
Observation of Collisionless Shocks in Laser-Plasma Experiments journal July 2008
Transition from Collisional to Collisionless Regimes in Interpenetrating Plasma Flows on the National Ignition Facility journal May 2017
Ion kinetic simulations of the formation and propagation of a planar collisional shock wave in a plasma journal September 1993
Collision and interpenetration of plasmas created by laser‐illuminated disks journal April 1992
Design of an Optical Thomson Scattering diagnostic at the National Ignition Facility conference September 2016
Simulation techniques for heavy ion fusion chamber transport
  • Welch, D. R.; Rose, D. V.; Oliver, B. V.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 464, Issue 1-3 https://doi.org/10.1016/S0168-9002(01)00024-9
journal May 2001
Ignition on the National Ignition Facility: a path towards inertial fusion energy journal September 2009
Measurement of Shock-Wave Structure in Helium-Argon Mixtures journal January 1967
Plasma characterization using ultraviolet Thomson scattering from ion-acoustic and electron plasma waves (invited) journal July 2016
HYADES—A plasma hydrodynamics code for dense plasma studies journal January 1994
Thickness of an embedded ion shock journal January 1975
Experimental characterization of the stagnation layer between two obliquely merging supersonic plasma jets text January 2013
Deciphering the Kinetic Structure of Multi-Ion Plasma Shocks text January 2017

Cited By (9)

Laser beam self-focusing in collisional plasma with periodical density ripple journal February 2020
Measurements of ion velocity separation and ionization in multi-species plasma shocks journal May 2018
Implementation of ultraviolet Thomson scattering on SG-III laser facility journal September 2018
Experimental study of ion heating in obliquely merging hypersonic plasma jets journal August 2019
Hybrid particle-in-cell simulations of laser-driven plasma interpenetration, heating, and entrainment journal November 2019
Single shot high bandwidth laser plasma probe journal November 2019
Kinetic physics in ICF: present understanding and future directions journal April 2018
Experimental Measurements of Ion Heating in Collisional Plasma Shocks and Interpenetrating Supersonic Plasma Flows text January 2018
Experimental Study of Ion Heating in Obliquely Merging Hypersonic Plasma Jets text January 2019

Figures / Tables (5)