Improved non-LTE simulation algorithm

POSTER

Abstract

The RAdiation Dependent Ionization Model (RADIOM)- a.k.a Busquet's model-[1] has proven its success in simulating non --LTE effects in laser fusion plasmas [2]. This improved algorithm can take into account Auger effect by a new parameter fitted to SCROLL [3] results. It is independent of the photon binning thanks to a projection on a standard grid. It guarantees smoother convergence to LTE. This algorithm has been implemented in a new way in the hydro-code FASTnD. Hydro simulations on the recent subMJ targets[4], with and without non-LTE corrections will be shown. [1] M. Busquet, Phys. Fluids B 5, 4191(1993). [2] D.G. Colombant et al{\ldots}, Phys. Plas. 7,2046 (2000). [3] A. Bar-Shalom, J. Oreg M. Klapisch, J. Quant. Spectr. Rad. Transf. \textbf{65} ,43 (2000). [4] S. P. Obenschain, D. G. Colombant, A. J. Schmitt et al., Phys. Plasmas \textbf{13}, 056320 (2006).

*Work supported By USDOE through a contract with Laser Plasma Branch, NRL.

Authors

  • Michel Busquet

    • ARTEP, Inc., Ellicott City, MD

  • Marcel Klapisch

    • ARTEP, Inc., Ellicott City, MD

  • Denis Colombant

    • Plasma Physics Division, NRL, Washington, DC

  • David Fyfe

    • LCP-FD, NRL, Washington, DC

  • John Gardner

    • Berkeley Research Associates, Springfield, VA