Figure 1

(Color online) Molecular frame photoelectron angular distributions calculated for absorption of left handed circularly polarized light of energy 419 eV. The molecular axis is parallel to the horizontal axis. The contributions of $1{\sigma }_g$ and $1{\sigma }_u$ hole states are shown by dot-dashed (red) and dashed (blue) lines, respectively. Their sum is shown by solid line (black).Reuse & Permissions

Figure 2

(Color online) Auger-electron intensities as a function of cos of the ejection angle $\theta$ relative to the molecular axis (horizontal axis) and of the KER (vertical axis). (a) and (b) correspond to the Auger decay of $1{\sigma }_g$ and $1{\sigma }_u$ hole states, respectively, selected via the gates on the photoelectron angle as marked in Fig. 1.Reuse & Permissions

Figure 3

(Color online) Auger-electron angular distributions (points with error bars) in arbitrary units corresponding to the decay of the $1{\sigma }_g$ (a) and $1{\sigma }_u$ (b) hole states obtained by integration of the results of Fig. 2 over KER energy from 8 to 9 eV. Molecular axis is directed along the horizontal axis. The dot-dashed and solid lines (see the text for detail) show the results of theoretical calculations (normalized to the experiment) including the Auger transitions to the doubly charged molecular ion states ${\left(1{\pi }_u\right)}^{-2}$ ${{}^1\Delta }_g$ and ${\left(1{\pi }_u\right)}^{-2}$ ${{}^1\Sigma }_g^{+}$.Reuse & Permissions

Figure 4

(Color online) Potential-energy curves from Refs. [3, 24]. (solid lines) and from [25] (dot-dashed line), and our total KER spectrum (in arbitrary units). The zero KER energy corresponds to the dissociation limit into the ${\text{N}}^{+}\left({}^{3}P\right)+{\text{N}}^{+}\left({}^{3}P\right)$ ion states. The shaded areas correspond to the contributions of three different dicationic states mentioned in the figure.Reuse & Permissions