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

Journal Article · Mon Dec 15 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4904770· OSTI ID:22390823

Dasgupta, A. ^[1]; Apruzese, J. P. ^[2]; Jones, B.; Harvey-Thompson, A. J.; Ampleford, D. J.; Jennings, C. A.; Hansen, S. B.; Moore, N. W.; Lamppa, D. C.; Coverdale, C. A.; Cuneo, M. E.; Rochau, G. A. ^[3]

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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)

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.

• OSTI ID: 22390823
• Journal Information: AIP Conference Proceedings, Vol. 1639, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ARGON
DOPPLER EFFECT
ION TEMPERATURE
IONS
LINE WIDTHS
MAGNETOHYDRODYNAMICS
PLASMA HEATING
PLASMA PRODUCTION
TWO-DIMENSIONAL CALCULATIONS
VELOCITY