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Title: The effect of gradients at stagnation on K-shell x-ray line emission in high-current Ar gas-puff implosions

Argon gas puffs have produced 330 kJ ± 9% of x-ray radiation above 3 keV photon energy in fast z-pinch implosions, with remarkably reproducible K-shell spectra and power pulses. This reproducibility in x-ray production is particularly significant in light of the variations in instability evolution observed between experiments. Soft x-ray power measurements and K-shell line ratios from a time-resolved spectrum at peak x-ray power suggest that plasma gradients in these high-mass pinches may limit the K-shell radiating mass, K-shell power, and K-shell yield from high-current gas puffs.
Authors:
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  1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
  2. Engility Corp., Chantilly, Virginia 20151 (United States)
  3. Naval Research Laboratory, Washington, DC 20375 (United States)
Publication Date:
OSTI Identifier:
22408045
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 2; Other Information: (c) 2015 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; CURRENTS; EMISSION SPECTRA; IMPLOSIONS; K SHELL; KEV RANGE; PHOTONS; PLASMA; PLASMA INSTABILITY; PULSES; SOFT X RADIATION; TIME RESOLUTION