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Title: One-and-Two-Dimensional Simulations of Liner Performance at Atlas Parameters

Abstract

The authors report results of one-and-two-dimensional MHD simulations of an imploding heavy liner in Z-pinch geometry. The driving current has a pulse shape and peak current characteristic of the Atlas pulsed-power facility being constructed at Los Alamos National Laboratory. One-dimensional simulations of heavy composite liners driven by 30 MA currents can achieve velocities on the order of 14 km/sec. Used to impact a tungsten target, the liner produces shock pressures of approximately fourteen megabars. The first 2-D simulations of imploding liners driven at Atlas current parameters are also described. These simulations have focused on the interaction of the liner with the glide planes, and the effect of realistic surface perturbations on the dynamics of the pinch. It is found that the former interaction does not seriously affect the inner liner surface. Results from the second problem indicate that a surface perturbation having amplitude as small as 0.2 {micro}m can have a significant effect on the implosion dynamics.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (US)
Sponsoring Org.:
USDOE Office of Defense Programs (DP) (US)
OSTI Identifier:
760121
Report Number(s):
LA-UR-98-4102
TRN: US0004451
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: VIIh International Conference on Megagauss Magnetic Field Generation and Related Topics, Tallahassee, FL (US), 10/18/1998--10/23/1998; Other Information: PBD: 18 Oct 1998
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LINEAR Z PINCH DEVICES; MAGNETOHYDRODYNAMICS; COMPUTERIZED SIMULATION; LINERS; IMPLOSIONS; LANL; PERFORMANCE

Citation Formats

Keinigs, R.K., Atchison, W.L., Faehl, R.J., Mclenithan, K.D., and Trainor, R.J. One-and-Two-Dimensional Simulations of Liner Performance at Atlas Parameters. United States: N. p., 1998. Web.
Keinigs, R.K., Atchison, W.L., Faehl, R.J., Mclenithan, K.D., & Trainor, R.J. One-and-Two-Dimensional Simulations of Liner Performance at Atlas Parameters. United States.
Keinigs, R.K., Atchison, W.L., Faehl, R.J., Mclenithan, K.D., and Trainor, R.J. Sun . "One-and-Two-Dimensional Simulations of Liner Performance at Atlas Parameters". United States. https://www.osti.gov/servlets/purl/760121.
@article{osti_760121,
title = {One-and-Two-Dimensional Simulations of Liner Performance at Atlas Parameters},
author = {Keinigs, R.K. and Atchison, W.L. and Faehl, R.J. and Mclenithan, K.D. and Trainor, R.J.},
abstractNote = {The authors report results of one-and-two-dimensional MHD simulations of an imploding heavy liner in Z-pinch geometry. The driving current has a pulse shape and peak current characteristic of the Atlas pulsed-power facility being constructed at Los Alamos National Laboratory. One-dimensional simulations of heavy composite liners driven by 30 MA currents can achieve velocities on the order of 14 km/sec. Used to impact a tungsten target, the liner produces shock pressures of approximately fourteen megabars. The first 2-D simulations of imploding liners driven at Atlas current parameters are also described. These simulations have focused on the interaction of the liner with the glide planes, and the effect of realistic surface perturbations on the dynamics of the pinch. It is found that the former interaction does not seriously affect the inner liner surface. Results from the second problem indicate that a surface perturbation having amplitude as small as 0.2 {micro}m can have a significant effect on the implosion dynamics.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {10}
}

Conference:
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