Title :
L-shell spectroscopic diagnostics of imploding wire array plasmas
Author :
Hansen, S.B. ; Jennings, C.A. ; Jones, B. ; Ampleford, D.J. ; Waisman, E.M. ; Coverdale, C.A. ; Cuneo, M.E. ; Thornhill, J.W. ; Giuliani, J.L. ; Apruzese, J.P. ; Dasgupta, A. ; Clark, R.W. ; Davis, J.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM, USA
Abstract :
Summary form only given. Intriguing time-gated, radially resolved L-shell line emission profiles have been observed from recent Cu/Ni wire array implosions on Sandia´s Z facility. The well resolved measurements exhibit lineshapes that appear as hollow, asymmetric ovals whose variations in the intensity, spatial, and (Doppler-shifted) wavelength dimensions yield information on plasma densities, temperatures, gradients, dimensions, and velocities. We present an analysis of the measured L-shell emission using the accurate and flexible hybrid-structure collisional-radiative atomic model SCRAM and compare the diagnosed plasma conditions and modeled spectra with predictions and post-processed emission from the three-dimensional magneto-hydrodynamics code GORGON.
Keywords :
copper; exploding wires; explosions; nickel; plasma collision processes; plasma density; plasma diagnostics; plasma magnetohydrodynamics; plasma simulation; plasma temperature; Cu-Ni; Doppler-shift wavelength; GORGON; L-shell spectroscopic diagnostics; SCRAM; Sandia Z facility; flexible hybrid-structure collisional-radiative atomic model; imploding wire array plasma; plasma density; plasma temperature; plasma velocity; postprocessed emission; radially resolved L-shell line emission; three-dimensional magnetohydrodynamics code; Atomic measurements; Plasma density; Plasma diagnostics; Plasma measurements; Plasma temperature; Plasma waves; Spatial resolution; Spectroscopy; Wavelength measurement; Wire;
Conference_Titel :
Plasma Science, 2010 Abstracts IEEE International Conference on
Conference_Location :
Norfolk, VA
Print_ISBN :
978-1-4244-5474-7
Electronic_ISBN :
0730-9244
DOI :
10.1109/PLASMA.2010.5533995
