Fig. 10: Radiative cooling calculations.
From: Spatiotemporal dynamics of fast electron heating in solid-density matter via XFEL
Radiative energy loss of a solid-density hot Cu plasma is calculated for initial electron temperatures of 100, 300, and 1000 eV up to 50 ps. The temporal evolution of (a) the electron temperatures and (b) the ionization states shows significant decreases in both quantities between 1 and 10 ps. c Comparison of the temporal decay in the electron temperature and Fermi temperature with constant density. The rapid drop in the electron temperature leads to the transition of the plasma to a degenerate state (TF > Te). The vertical dashed line indicates the transition time of 14.3 ps for the 100 eV case.
