X-ray absorption of a warm dense aluminum plasma created by an ultra-short laser pulse

Atomic decay data for modeling the Al K lines

“…The AUTOSTRUCTURE and MCDF λ Kα values are definitely too short, while our HFR value for N = 12 agrees remarkably well with the relativistic many-body pertubation theory (RMBPT) calculation of Deslattes et al (2003) and is slightly shorter (by ∼5 mÅ) than the measurement compiled by the same authors. Lecherbourg et al (2007) observed a broad line at 8.331 Å close to our HFR UTA centroid value of 8.329 Å but ∼30 mÅ longer than our AUTOSTRUCTURE (8.300 Å) and MCDF (8.301 Å) UTA centroid values. Regarding the Kβ UTA centroid wavelengths also shown in Table 5, a good agreement is observed for N = 12 between our HFR and MCDF calculations and the RMBPT value of Deslattes et al (2003), with AUTOSTRUCTURE 10 mÅ shorter and experiment (Deslattes et al 2003) 20 mÅ longer.…”

“…As a result of the comparisons with the spectroscopic data, our calculated wavelengths for systems with 4 ≤ N ≤ 8 have been empirically shifted with −Δλ e . Comparisons of our computed UTA centroid wavelengths, λ Kα and λ Kβ , for the second-row ions (10 ≤ N ≤ 13) with the theoretical and experimental values of Deslattes et al (2003), and the measurements of Lecherbourg et al (2007) are presented in Table 5. The AUTOSTRUCTURE and MCDF λ Kα values are definitely too short, while our HFR value for N = 12 agrees remarkably well with the relativistic many-body pertubation theory (RMBPT) calculation of Deslattes et al (2003) and is slightly shorter (by ∼5 mÅ) than the measurement compiled by the same authors.…”

High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal

“…By employing a small, dedicated low inductance pulser to drive the xpinch, such as the one described by Mesyats et al, 19 one could couple this diagnostic to a wide range of laser plasma and pulsed power experiments. Examples include the study of conditions in hydrodynamic 20,21 and magnetically driven jets, [22][23][24] materials in WDM state, 11,12 and the structure of radiative shocks. 21,25 Additionally, the excellent spectral resolution makes it possible to improve and expand upon data previously taken of spectral opacities in highly controlled samples such as those found in Refs.…”

“…[5][6][7][8][9][10] It has been employed for the last two decades to measure parameters of laser produced plasmas in the high energy density (HED) regime [5][6][7][8][9][10] and more recently to measure properties of material in the warm dense matter (WDM) regime. 11,12 Acquiring this information in a time and space resolved manner can shed much needed light on the properties of HED laboratory and astrophysical plasmas. For instance, many radiation generation and transport models used in computer simulation codes to study the dynamics of HED plasmas employ coarse approximations for ionization and radiation.…”

Calibration and analysis of spatially resolved x-ray absorption spectra from a nonuniform plasma

“…16 The standard SCRAM model was supplemented with additional fine structure data in order to obtain more accurate calculations of the 1s → 3p transitions than have been obtained in the past. 17 A table of opacities at discrete densities and temperatures was compiled and used as the primary theoretical spectral data in our analysis. The temperature and density were logarithmically spaced on the intervals 1−100 eV and 0.00027−2.7 g/cm 3 , respectively.…”