skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Kinetic mix mechanisms in shock-driven inertial confinement fusion implosions

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4876615· OSTI ID:22252817
; ; ; ; ; ; ; ;  [1]; ; ;  [2]; ; ; ; ; ;  [3]; ;  [4] more »; « less
  1. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  3. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)
  4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

Shock-driven implosions of thin-shell capsules, or “exploding pushers,” generate low-density, high-temperature plasmas in which hydrodynamic instability growth is negligible and kinetic effects can play an important role. Data from implosions of thin deuterated-plastic shells with hydroequivalent D{sup 3}He gas fills ranging from pure deuterium to pure {sup 3}He [H. G. Rinderknecht et al., Phys. Rev. Lett. 112, 135001 (2014)] were obtained to evaluate non-hydrodynamic fuel-shell mix mechanisms. Simulations of the experiments including reduced ion kinetic models support ion diffusion as an explanation for these data. Several additional kinetic mechanisms are investigated and compared to the data to determine which are important in the experiments. Shock acceleration of shell deuterons is estimated to introduce mix less than or comparable to the amount required to explain the data. Beam-target mechanisms are found to produce yields at most an order of magnitude less than the observations.

OSTI ID:
22252817
Journal Information:
Physics of Plasmas, Vol. 21, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
Country of Publication:
United States
Language:
English

References (47)

HYADES—A plasma hydrodynamics code for dense plasma studies journal January 1994
Thermo-diffusion in inertially confined plasmas journal April 2014
Initial performance results of the OMEGA laser system journal January 1997
25 ps neutron detector for measuring ICF‐target burn history journal January 1995
Feedout and Richtmyer–Meshkov instability at large density difference journal February 2001
Spectrometry of charged particles from inertial-confinement-fusion plasmas journal February 2003
Prototypes of National Ignition Facility neutron time-of-flight detectors tested on OMEGA journal October 2004
D3He-proton emission imaging for inertial-confinement-fusion experiments (invited) journal October 2004
Tests of the hydrodynamic equivalence of direct-drive implosions with different D2 and He3 mixtures journal May 2006
Point design targets, specifications, and requirements for the 2010 ignition campaign on the National Ignition Facility journal May 2011
Atomic mix in directly driven inertial confinement implosions journal November 2011
Transport coefficients in strongly coupled plasmas journal March 2012
Electro-diffusion in a plasma with two ion species journal August 2012
Hydrodynamic instability growth and mix experiments at the National Ignition Facility journal May 2014
Species separation and kinetic effects in collisional plasma shocks journal May 2014
Ion kinetic simulations of the formation and propagation of a planar collisional shock wave in a plasma journal September 1993
Oblique shocks and the combined Rayleigh–Taylor, Kelvin–Helmholtz, and Richtmyer–Meshkov instabilities journal June 1994
Development of the indirect‐drive approach to inertial confinement fusion and the target physics basis for ignition and gain journal November 1995
Irradiation uniformity for high-compression laser-fusion experiments journal May 1999
Laser implosion of microballoons: study of the transition from exploding-pusher to ablative regime journal May 1984
Improved formulas for fusion cross-sections and thermal reactivities journal April 1992
Relativistic calculation of fusion product spectra for thermonuclear plasmas journal November 1998
Fusion neutron energies and spectra journal July 1973
Non-linear Rayleigh-Taylor instability in (spherical) laser accelerated targets journal March 1987
Electric field and ionization-gradient effects on inertial-confinement-fusion implosions journal November 2009
The Physics of Inertial Fusion book January 2004
Onset of nonlinear saturation for Rayleigh-Taylor growth in the presence of a full spectrum of modes journal June 1989
Monoenergetic-Proton-Radiography Measurements of Implosion Dynamics in Direct-Drive Inertial-Confinement Fusion journal June 2008
Rayleigh-Taylor Growth Measurements in the Acceleration Phase of Spherical Implosions on OMEGA journal September 2009
Plasma Adiabatic Lapse Rate journal August 2012
Knudsen Layer Reduction of Fusion Reactivity journal August 2012
Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility journal January 2014
First Observations of Nonhydrodynamic Mix at the Fuel-Shell Interface in Shock-Driven Inertial Confinement Implosions journal April 2014
Exploration of the Transition from the Hydrodynamiclike to the Strongly Kinetic Regime in Shock-Driven Implosions journal May 2014
Formation and Structure of Electrostatic Collisionless Shocks journal December 1970
Rayleigh-Taylor Instability and Laser-Pellet Fusion journal September 1974
Charged-particle stopping powers in inertial confinement fusion plasmas journal May 1993
Direct Observation of Mass Oscillations Due to Ablative Richtmyer-Meshkov Instability in Plastic Targets journal December 2001
Multibeam Stimulated Brillouin Scattering from Hot, Solid-Target Plasmas journal October 2002
Measuring Implosion Dynamics through ρ R Evolution in Inertial-Confinement Fusion Experiments journal March 2003
Proton Shock Acceleration in Laser-Plasma Interactions journal January 2004
Time-Dependent Nuclear Measurements of Mix in Inertial Confinement Fusion journal May 2007
Proton Radiography of Inertial Fusion Implosions journal February 2008
Design of continuous surface-relief phase plates by surface-based simulated annealing to achieve control of focal-plane irradiance journal January 1996
Improved formulas for fusion cross-sections and thermal reactivities journal December 1993
Direct Observation of Mass Oscillations Due to Ablative Richtmyer-Meshkov Instability in Plastic Targets text January 2001
Electro-diffusion in a plasma with two ion species text January 2012

Cited By (9)

Ion-kinetic simulations of D- 3 He gas-filled inertial confinement fusion target implosions with moderate to large Knudsen number journal January 2016
Plasma kinetic effects on interfacial mix journal November 2016
Observation and modeling of interspecies ion separation in inertial confinement fusion implosions via imaging x-ray spectroscopy journal March 2017
Progress on observations of interspecies ion separation in inertial-confinement-fusion implosions via imaging x-ray spectroscopy journal June 2019
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas journal January 2020
Kinetic simulations of fusion ignition with hot-spot ablator mix journal September 2019
Self-Similar Structure and Experimental Signatures of Suprathermal Ion Distribution in Inertial Confinement Fusion Implosions journal September 2015
Imaging at an x-ray absorption edge using free electron laser pulses for interface dynamics in high energy density systems journal May 2017
Observation and modeling of interspecies ion separation in inertial confinement fusion implosions via imaging x-ray spectroscopy text January 2017

Similar Records

Kinetic mix mechanisms in shock-driven inertial confinement fusion implosions
Journal Article · Mon May 19 00:00:00 EDT 2014 · Physics of Plasmas · OSTI ID:22252817

First Observations of Nonhydrodynamic Mix at the Fuel-Shell Interface in Shock-Driven Inertial Confinement Implosions
Journal Article · Tue Apr 01 00:00:00 EDT 2014 · Physical Review Letters · OSTI ID:22252817

Nuclear measurements of fuel-shell mix in inertial confinement fusion implosions at OMEGA
Journal Article · Tue May 15 00:00:00 EDT 2007 · Physics of Plasmas · OSTI ID:22252817