Review Of Scientific Instruments
We report on an initial spectroscopic study of low-density, x-ray photoionized neon with x-ray spectroscopy. These experiments, carried out on the Z-machine at Sandia, are optimized to produce a gradient-free, collisionless plasma, and to explore issues related to the rapid x-ray photoionization of relatively cold, low-density plasmas. The initial experiments used time-integrated absorption spectroscopy, backlit by the pinch radiation, to determine the ionization balance in the gas cell. Future experiments will use time-resolved spectroscopy in both absorption and emission. The emission spectra are expected to be similar to those seen from photoionized astrophysical sources, such as x-ray binaries. Indeed, in addition to addressing basic plasma and atomic physics issues, these experiments are designed to help the astrophysical community better understand the new, high-resolution spectra being produced by the Chandra and XMM-Newton telescopes, and to benchmark spectral synthesis codes.
14th Topical Conference On High-Temperature Plasma Diagnostics
July 8-11, 2002
David H. Cohen, J. J. MacFarlane, J. E. Bailey, and D. A. Liedahl.
"X-Ray Spectral Diagnostics Of Neon Photoionization Experiments On The Z-Machine".
Review Of Scientific Instruments.