Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000adnx.conf..135h&link_type=abstract
Atomic Data Needs for X-ray Astronomy, p. 135
Astronomy and Astrophysics
Astronomy
1
Photoionization, Plasmas (Physics), X Ray Astronomy, Zeta Pinch, X Ray Sources, Absorption Spectra, Iron, Sodium, Fluorides, Spectrometers
Scientific paper
The advanced spectroscopic capabilities of the new X-ray telescopes Chandra and X-Ray Multi-Mirror Mission (XMM) lead to a need for improved benchmarking of models for the photoionized accretion-disk plasmas which represent over half of known astrophysical X-ray sources. We report the first laboratory experimental results using 120 TW, 180 eV Z-pinch plasmas to drive iron samples into the photoionized equilibrium. The pinch spectrum, temperature, power and uniformity have been characterized in order to qualify it as a photoionization driver. Preliminary time integrated (8 A to 18 A) and time-resolved (12.5 A to 16 A) absorption and emission spectra of photoionized L-shell Fe and K-shell Na and F were observed using X-ray crystal spectrometers. Plans for upcoming experiments are also discussed.
Bailey Jeremy
Cuneo M.
Deeney Chris
Eming J. A.
Foord Mark E.
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