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Title: Application of the Wire Ablation Dynamics Model to the Design and Optimization of Wire Array Loads of Complex Geometry

Abstract

The implosion dynamics of wire array loads of complex geometry, such as nested cylindrical and planar wire arrays, is significantly affected by the uneven current distribution between the array wires, which was considered previously in the Wire Dynamics Model (WDM) simulations. The novel Wire Ablation Dynamics Model (WADM) extends the formalism of the original WDM by including the dynamics of wire ablation. The WADM simulations demonstrate that the implosions of the arrays with higher masses are more ablation dominated. The WADM simulations of the implosions dynamics of nested wire arrays have been performed for the short pulse (100 ns) and long pulse (220 ns) regimes at COBRA generator. Another factor that affects the result of the trade between the ablation and implosion time scales is the form of the current pulse, which can be very different from the classical sine-square shape. The predictions of the array implosion times by the WADM are in very good agreement with the recent experiments at the COBRA and Zebra facilities.

Authors:
; ; ; ; ;  [1]
  1. Department of Physics, University of Nevada, Reno, NV 89557 (United States)
Publication Date:
OSTI Identifier:
21255360
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1088; Journal Issue: 1; Conference: 7. international conference on dense Z-pinches, Alexandria, VA (United States), 12-21 Aug 2008; Other Information: DOI: 10.1063/1.3079750; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABLATION; CYLINDRICAL CONFIGURATION; GEOMETRY; IMPLOSIONS; MAGNETOHYDRODYNAMICS; OPTIMIZATION; PLASMA DIAGNOSTICS; PULSES; SIMULATION; WIRES

Citation Formats

Esaulov, A A, Kantsyrev, V L, Safronova, A S, Williamson, K M, Shrestha, I, and Osborne, G C. Application of the Wire Ablation Dynamics Model to the Design and Optimization of Wire Array Loads of Complex Geometry. United States: N. p., 2009. Web. doi:10.1063/1.3079750.
Esaulov, A A, Kantsyrev, V L, Safronova, A S, Williamson, K M, Shrestha, I, & Osborne, G C. Application of the Wire Ablation Dynamics Model to the Design and Optimization of Wire Array Loads of Complex Geometry. United States. https://doi.org/10.1063/1.3079750
Esaulov, A A, Kantsyrev, V L, Safronova, A S, Williamson, K M, Shrestha, I, and Osborne, G C. 2009. "Application of the Wire Ablation Dynamics Model to the Design and Optimization of Wire Array Loads of Complex Geometry". United States. https://doi.org/10.1063/1.3079750.
@article{osti_21255360,
title = {Application of the Wire Ablation Dynamics Model to the Design and Optimization of Wire Array Loads of Complex Geometry},
author = {Esaulov, A A and Kantsyrev, V L and Safronova, A S and Williamson, K M and Shrestha, I and Osborne, G C},
abstractNote = {The implosion dynamics of wire array loads of complex geometry, such as nested cylindrical and planar wire arrays, is significantly affected by the uneven current distribution between the array wires, which was considered previously in the Wire Dynamics Model (WDM) simulations. The novel Wire Ablation Dynamics Model (WADM) extends the formalism of the original WDM by including the dynamics of wire ablation. The WADM simulations demonstrate that the implosions of the arrays with higher masses are more ablation dominated. The WADM simulations of the implosions dynamics of nested wire arrays have been performed for the short pulse (100 ns) and long pulse (220 ns) regimes at COBRA generator. Another factor that affects the result of the trade between the ablation and implosion time scales is the form of the current pulse, which can be very different from the classical sine-square shape. The predictions of the array implosion times by the WADM are in very good agreement with the recent experiments at the COBRA and Zebra facilities.},
doi = {10.1063/1.3079750},
url = {https://www.osti.gov/biblio/21255360}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1088,
place = {United States},
year = {Wed Jan 21 00:00:00 EST 2009},
month = {Wed Jan 21 00:00:00 EST 2009}
}