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

Title: Plasma viscosity with mass transport in spherical inertial confinement fusion implosion simulations

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4935906· OSTI ID:22489850
;  [1];  [2];  [3];  [4];  [5]
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. University of Michigan, Ann Arbor, Michigan 48109 (United States)
  3. University of New Mexico, Albuquerque, New Mexico 87131 (United States)
  4. University of California, Santa Cruz, California 95064 (United States)
  5. Florida State University, Tallahassee, Florida 32306 (United States)
+ Show Author Affiliations

The effects of viscosity and small-scale atomic-level mixing on plasmas in inertial confinement fusion (ICF) currently represent challenges in ICF research. Many current ICF hydrodynamic codes ignore the effects of viscosity though recent research indicates viscosity and mixing by classical transport processes may have a substantial impact on implosion dynamics. We have implemented a Lagrangian hydrodynamic code in one-dimensional spherical geometry with plasma viscosity and mass transport and including a three temperature model for ions, electrons, and radiation treated in a gray radiation diffusion approximation. The code is used to study ICF implosion differences with and without plasma viscosity and to determine the impacts of viscosity on temperature histories and neutron yield. It was found that plasma viscosity has substantial impacts on ICF shock dynamics characterized by shock burn timing, maximum burn temperatures, convergence ratio, and time history of neutron production rates. Plasma viscosity reduces the need for artificial viscosity to maintain numerical stability in the Lagrangian formulation and also modifies the flux-limiting needed for electron thermal conduction.

OSTI ID:
22489850
Journal Information:
Physics of Plasmas, Vol. 22, Issue 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
Country of Publication:
United States
Language:
English

Cited By (13)

Observation and modeling of interspecies ion separation in inertial confinement fusion implosions via imaging x-ray spectroscopy journal March 2017
Plasma transport in an Eulerian AMR code journal April 2017
Yield degradation in inertial-confinement-fusion implosions due to shock-driven kinetic fuel-species stratification and viscous heating journal May 2018
Diffusion-driven fluid dynamics in ideal gases and plasmas journal June 2018
Multi-species plasma transport in 1D direct-drive ICF simulations journal March 2019
Turbulent mixing and transition criteria of flows induced by hydrodynamic instabilities journal August 2019
Progress on observations of interspecies ion separation in inertial-confinement-fusion implosions via imaging x-ray spectroscopy journal June 2019
Modeling hydrodynamics, magnetic fields, and synthetic radiographs for high-energy-density plasma flows in shock-shear targets journal January 2020
Self-similar solutions for multi-species plasma mixing by gradient driven transport journal March 2018
Kinetic physics in ICF: present understanding and future directions journal April 2018
Sudden diffusion of turbulent mixing layers in weakly coupled plasmas under compression journal December 2019
Self-similar regimes of turbulence in weakly coupled plasmas under compression journal February 2018
Observation and modeling of interspecies ion separation in inertial confinement fusion implosions via imaging x-ray spectroscopy text January 2017

Similar Records

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPUTERIZED SIMULATION
CONVERGENCE
DIFFUSION
ELECTRONS
HYDRODYNAMICS
IMPLOSIONS
INERTIAL CONFINEMENT
IONS
LAGRANGIAN FUNCTION
MASS TRANSFER
NEUTRONS
ONE-DIMENSIONAL CALCULATIONS
PLASMA
SPHERICAL CONFIGURATION
THERMAL CONDUCTION
TRANSPORT THEORY
VISCOSITY