Title :
Synthetic time and space resolved spectra including doppler splitting from simulations of stainless steel and argon pinches on Z
Author :
Thornhill, J.W. ; Giuliani, J.L. ; Apruzese, J.P. ; Dasgupta, Avirup ; Chong, Y.K. ; Jones, B. ; Ampleford, D.J. ; Harvey-Thompson, A.J. ; Hansen, S.B. ; Coverdale, C.A. ; Jennings, C.A. ; Rochau, G.A. ; Cuneo, M.E.
Author_Institution :
Plasma Phys. Div., Naval Res. Lab., Washington, DC, USA
Abstract :
Summary form only given. A two-dimensional radiation MHD model that includes a self-consistent calculation for non-local thermodynamic equilibrium kinetics and ray-trace radiation transport1 is employed to simulate 65 mm diameter stainless steel double wire array Z machine experiments of 5.0 mg - shot Z1859 and 2.5 mg - shot Z1860 as well as 8 cm diameter, 2.5 mg, argon gas-puff experiments, shots Z2259 - Z2261. Temporal and spatial knowledge of the atomic populations, ion temperatures, and velocities obtained from these calculations allows us to then apply (post-process) detailed multifrequency ray-trace radiation transport, including Doppler effects, to construct time- and axially- or radially-resolved synthetic spectra. Calculated spectra, with and without Doppler effects, for He-like iron and H-like argon near the time of peak emission are compared with experimental data in order to better understand and illustrate time dependent Doppler effects influence on observed spectra.
Keywords :
Doppler effect; Z pinch; plasma kinetic theory; plasma magnetohydrodynamics; plasma simulation; plasma temperature; plasma thermodynamics; plasma transport processes; Doppler splitting; H-like argon; He-like iron; Z1859 shot; Z1860 shot; argon Z pinches; atomic populations; axially-resolved synthetic spectra; ion temperatures; knowledge velocities; mass 2.5 mg; mass 5 mg; multifrequency ray-trace radiation transport; nonlocal thermodynamic equilibrium kinetics; observed spectra; peak emission; radially-resolved synthetic spectra; self-consistent calculation; shot Z2259 - Z2261; size 65 mm; size 8 cm; space resolved spectra; spatial knowledge; stainless steel double wire array Z machine experiments; stainless steel simulations; synthetic time; temporal knowledge; time dependent Doppler effects; time-resolved synthetic spectra; two-dimensional radiation MHD model; Argon; Doppler effect; Laboratories; Magnetohydrodynamics; Plasmas; Steel;
Conference_Titel :
Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014 IEEE 41st International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4799-2711-1
DOI :
10.1109/PLASMA.2014.7012216
