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Title: Two dimensional RMHD modeling of effective ion temperatures in recent ZR argon experiments

Radiation magnetohydrodynamic r-z simulations are performed of recent Ar shots on the refurbished Z generator to examine the effective ion temperature as determined from the observed line width of the He-γ line. While many global radiation properties can be matched to experimental results, the Doppler shifts due to velocity gradients at stagnation cannot reproduce the large experimentally determined width corresponding to an effective ion temperature of 50 keV. Ion viscous heating or magnetic bubbles are considered, but understanding the width remains an unsolved challenge.
Authors:
; ;  [1] ;  [2] ; ; ; ; ; ; ; ; ; ;  [3]
  1. Plasma Physics Division, Naval Research Laboratory, Washington DC 20375 (United States)
  2. Engility Corp., Chantilly, VA 20151 (United States)
  3. Sandia National Laboratories, Albuquerque NM 87185 (United States)
Publication Date:
OSTI Identifier:
22390823
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1639; Journal Issue: 1; Conference: 9. International Conference on Dense Z Pinches, Napa, CA (United States), 3-7 Aug 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ARGON; DOPPLER EFFECT; ION TEMPERATURE; IONS; LINE WIDTHS; MAGNETOHYDRODYNAMICS; PLASMA HEATING; PLASMA PRODUCTION; TWO-DIMENSIONAL CALCULATIONS; VELOCITY