Super-configuration-accounting opacity of CH and its applications*

Polystyrene CH is an essential material in inertial-confinement-fusion (ICF) target designs [1]. Based on super transition arrays (STA) calculations [2], we generate a wide range polyethylene (CH) opacity table of density ρ= 1.0 × 10^-6 to ρ = 500 g/cm³ and temperature T = 0.015 to 2.5 keV. Contrasting the STA calculated opacities to the results obtained using the first principle quantum molecular dynamics (QMD) code developed at the Laboratory for Laser Energetic of University of Rochester and the ATOMIC code from Los Alamos National Laboratory [3], we find that the STA results are in reasonable agreement with the data from QMD and ATOMIC codes down to plasma temperature of about 20 eV where comparisons are possible. Additionally, we present samples of assessment on the reliability of the present CH dataset through a radiation hydrodynamic simulation.   

[1] D.T. Michel, V.N. Goncharov, I.V. Igumenshchev, R. Epstein and D.H. Froula, Phys. Rev. Lett. 111, 245005 (2013).

[2] A. Bar-Shalom, J. Oreg, W. H. Goldstein, D. Shvarts, and A. Zigler, Phys. Rev. A, 40, 3183, (1989).

[3] S.X. Hu et al., Phys. Rev. B., 96, 144203 (2017)