Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apjs..127..275c&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 127, Issue 2, pp. 275-281.
Astronomy and Astrophysics
Astronomy
29
Atomic Data, Atomic Processes, Hydrodynamics, Methods: Laboratory
Scientific paper
Absorption of the 2p-3d transitions of iron has been measured using point projection spectroscopy. Thin C tamped Fe foils were heated around 20 eV by X-rays generated in gold spherical hohlraums irradiated by the high-power laser ASTERIX IV. Absorption of Fe V to Fe X has been observed in the spectral vicinity of 730 eV (17 Å). The Ag backlighter source and absorbed spectra were recorded on the same shot by a TlAP crystal spectrograph. The experimental spectra have been reproduced by the two superconfiguration local thermodynamic equilibrium codes SCO and STA. Detailed statistical calculations of the different ionic structures have also been performed with the Spin Orbit Split Arrays method, allowing the determination of ion populations. The electron temperature and average ionization obtained by fitting the experiment with the different calculations were compared with radiative hydrodynamic simulations.
Bachelier Annik
Bauche Jacques
Bauche-Arnoult Claire
Blenski Thomas
Chenais-Popovics Claude
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