Figure 1

TDCS results for DPI from neon (black curve) with equal energy ionized electrons under various experimental conditions. Experimental points (green circles) in the first five panels are those of Krässig et al. [19]. The final state symmetry of the residual dication and photon energy are described in each panel. The fixed electron indicated by the blue arrow is measured at different angles ${\theta }_1$ in the plane perpendicular to the photon beam, as indicated. $S_1$ is the Stokes parameter that describes the relative excess of linear polarization along the major and minor axis of the polarization ellipse. $S_1=1$ corresponds to perfectly linearly polarized light along the horizontal $z$ axis. Factors at the bottom right of each panel denote the magnitudes of the calculated TDCS in $\mathrm{b}/\mathrm{eV}/{\mathrm{sr}}^2$.Reuse & Permissions

Figure 2

Internormalized TDCS results calculated for argon (black curve) leaving the dication in a $3p^4$ ${}^{3}P^e$ final state with excess photon energy 40 eV above the DPI threshold. Experimental points (green circles) are those measured by Bolognesi et al. [20]. The fixed electron carries kinetic energy $E_1$ and is indicated by the blue arrow measured at angle ${\theta }_1$ in the plane perpendicular to the photon beam containing the polarization, which lies along the horizontal axis in all panels. The radial length in each panel is $2.2\mathrm{b}/\mathrm{eV}/{\mathrm{sr}}^2$.Reuse & Permissions

Figure 3

TDCS results (black curves) for DPI from doubly excited $2p^2$ ${}^{3}P^e$ helium (first column), neon leaving the ion in the $2p^4$ ${}^{3}P^e$ configuration (second column), and argon leaving the residual $3p^4$ ${}^{3}P^e$ dication (third column). The photon energy is 1.303 times the double IP. The blue arrow denotes the fixed electron direction relative to the polarization direction (horizontal axis) carrying the indicated energy sharing. Cross sections are normalized to unity.Reuse & Permissions