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Title: The Role of Strong Coupling in Z-Pinch-Driven Approaches to High Yield Inertial Confinement Fusion

Abstract

Peak x-ray powers as high as 280 {+-} 40 TW have been generated from the implosion of tungsten wire arrays on the Z Accelerator at Sandia National Laboratories. The high x-ray powers radiated by these z-pinches provide an attractive new driver option for high yield inertial confinement fusion (ICF). The high x-ray powers appear to be a result of using a large number of wires in the array which decreases the perturbation seed to the magnetic Rayleigh-Taylor (MRT) instability and diminishes other 3-D effects. Simulations to confirm this hypothesis require a 3-D MHD code capability, and associated databases, to follow the evolution of the wires from cold solid through melt, vaporization, ionization, and finally to dense imploded plasma. Strong coupling plays a role in this process, the importance of which depends on the wire material and the current time history of the pulsed power driver. Strong coupling regimes are involved in the plasmas in the convolute and transmission line of the powerflow system. Strong coupling can also play a role in the physics of the z-pinch-driven high yield ICF target. Finally, strong coupling can occur in certain z-pinch-driven application experiments.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
14832
Report Number(s):
SAND99-1346C
TRN: US0106807
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: The 1999 International Conference on Strongly Coupled Coulomb Systems, Saint-Malo (FR), 09/04/1999--09/10/1999; Other Information: PBD: 8 Nov 1999
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LINEAR Z PINCH DEVICES; ACCELERATORS; IMPLOSIONS; INERTIAL CONFINEMENT; IONIZATION; SANDIA NATIONAL LABORATORIES; COUPLING; ICF DEVICES; RAYLEIGH-TAYLOR INSTABILITY; MAGNETOHYDRODYNAMICS; THREE-DIMENSIONAL CALCULATIONS; COMPUTERIZED SIMULATION

Citation Formats

MEHLHORN,THOMAS A., DESJARLAIS,MICHAEL P., HAILL,THOMAS A., LASH,JOEL S., ROSENTHAL,STEPHEN E., SLUTZ,STEPHEN A., STOLTZ,PETER H., VESEY,ROGER A., and OLIVER,B. The Role of Strong Coupling in Z-Pinch-Driven Approaches to High Yield Inertial Confinement Fusion. United States: N. p., 1999. Web.
MEHLHORN,THOMAS A., DESJARLAIS,MICHAEL P., HAILL,THOMAS A., LASH,JOEL S., ROSENTHAL,STEPHEN E., SLUTZ,STEPHEN A., STOLTZ,PETER H., VESEY,ROGER A., & OLIVER,B. The Role of Strong Coupling in Z-Pinch-Driven Approaches to High Yield Inertial Confinement Fusion. United States.
MEHLHORN,THOMAS A., DESJARLAIS,MICHAEL P., HAILL,THOMAS A., LASH,JOEL S., ROSENTHAL,STEPHEN E., SLUTZ,STEPHEN A., STOLTZ,PETER H., VESEY,ROGER A., and OLIVER,B. Mon . "The Role of Strong Coupling in Z-Pinch-Driven Approaches to High Yield Inertial Confinement Fusion". United States. https://www.osti.gov/servlets/purl/14832.
@article{osti_14832,
title = {The Role of Strong Coupling in Z-Pinch-Driven Approaches to High Yield Inertial Confinement Fusion},
author = {MEHLHORN,THOMAS A. and DESJARLAIS,MICHAEL P. and HAILL,THOMAS A. and LASH,JOEL S. and ROSENTHAL,STEPHEN E. and SLUTZ,STEPHEN A. and STOLTZ,PETER H. and VESEY,ROGER A. and OLIVER,B.},
abstractNote = {Peak x-ray powers as high as 280 {+-} 40 TW have been generated from the implosion of tungsten wire arrays on the Z Accelerator at Sandia National Laboratories. The high x-ray powers radiated by these z-pinches provide an attractive new driver option for high yield inertial confinement fusion (ICF). The high x-ray powers appear to be a result of using a large number of wires in the array which decreases the perturbation seed to the magnetic Rayleigh-Taylor (MRT) instability and diminishes other 3-D effects. Simulations to confirm this hypothesis require a 3-D MHD code capability, and associated databases, to follow the evolution of the wires from cold solid through melt, vaporization, ionization, and finally to dense imploded plasma. Strong coupling plays a role in this process, the importance of which depends on the wire material and the current time history of the pulsed power driver. Strong coupling regimes are involved in the plasmas in the convolute and transmission line of the powerflow system. Strong coupling can also play a role in the physics of the z-pinch-driven high yield ICF target. Finally, strong coupling can occur in certain z-pinch-driven application experiments.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {11}
}

Conference:
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