G. Winhart et al., MEASUREMENTS OF EXTREME UV OPACITIES IN HOT DENSE AL, PE, AND HO, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 53(2), 1996, pp. 1332-1335
The opacities of aluminum, iron, and holmium were measured spectrally
resolved in the energy range of 70 to 280 eV at typical densities and
temperatures of about 0.01 g/cm(3) and 22 eV, respectively. For this p
urpose the iodine laser ASTERIX IV (200 J/0.4 ns at 400 nm) was focuse
d into a spherical gold cavity with a diameter of 3 mm. The generated
radiation with a temperature of 60 eV heated thin tampered absorber fo
ils which were probed by the radiation from a backlighter source. The
experimental data are compared with theoretical opacity models.