2013/01/15 by W. R. Johnson, J. Nilsen, K. T. Cheng
Physics and Astronomy · #physics.plasm-ph
paper · pdf · doi:10.1016/j.hedp.2013.03.008
published as High Energy Density Physics, 9 407-409 (2013) · 6 pages, 3 figures, 1 table
arxiv created 2013/01/15 · arxiv updated 2015/06/12
Recent calculations [Nilsen et al. arXiv:1212.5972] predict that contributions to the scattered photon spectrum from 3s and 3p bound states in chromium (Z=24) at metallic density and T=12 eV resonate below the respective bound-state thresholds. These resonances are shown to be closely related to continuum lowering, where 3d bound states in the free atom dissolve into a resonant l=2 partial wave in the continuum. The resulting d-state resonance dominates contributions to the bound-free dynamic structure function, leading to the predicted resonances in the scattered X-ray spectrum. Similar resonant features are shown to occur in all elements in the periodic table between Ca and Mn (20 <= Z <= 25).