Abstract Details
Photoionised plasma experiments at Z
Author: Iain M Hall
Requested Type: Poster Only
Submitted: 2009-04-21 18:06:30
Co-authors: I. M. Hall, T. Durmaz and R. C. Mancini (University of Nevada, Reno), J. E. Bailey and G. A. Rochau (Sandia National Laboratories), M. J. Rosenberg and D. H. Cohen (Swarthmore College), I. E. Golovkin and J. J. MacFarlane (Prism Computational Sciences), M. E. Sherril and J. Abdallah (Los Alamos National Laboratory), R. F. Heeter, M. E. Foord, and S. H. Glenzer (Lawrence Livermore National Laboratory)
Contact Info:
University of Nevada, Reno
1664 N. Virginia St.
Reno, Nevada 89554
USA
Abstract Text:
Photoionised plasmas are common in astrophysical environments and new high resolution spectra from such sources have been recorded in recent years by the Chandra and XMM-Newton satellites. These observations provide a wealth of spectroscopic information and have motivated recent efforts aimed at obtaining a detailed understanding of the atomic-kinetic and radiative characteristics of photoionised plasmas. The Z facility at Sandia National Laboratories is the most powerful terrestrial source of X-rays and provides the means to study photoionised plasmas in a laboratory environment. We present modelling work and analysis of recent data from experiments at Z in which x-rays from a collapsing z-pinch dynamic-hohlraum were used to photoionise low density neon contained in a gascell target. Detailed spectroscopic modelling calculations were used to analyse the absorption line spectra produced by the photoionised neon plasma in an effort to extract the charge distribution and the ionization parameter.
Work supported by DOE/SSAA grant DE-FG52-06NA27587 and SNL.
Comments: