Figure 1

Correlation diagram between electron energy and kinetic energy release (KER) in fragmentation into (a) ${\mathrm{Ne}}^{2+}$ and ${\mathrm{Ne}}^{+}$ ions and (b) ${\mathrm{Ne}}^{+}$ and ${\mathrm{Ne}}^{+}$ ions. The color coding shows the relative electron intensities in arbitrary units. The photon energy was tuned to be 880.2 eV, just 10 eV above the Ne $1s$ ionization potential.Reuse & Permissions

Figure 2

Polar plots of the Ne $1s$ PADs from ${\mathrm{Ne}}_2$ in coincidence with (a) ${\mathrm{Ne}}^{2+}+{\mathrm{Ne}}^{+}$ and with (b) ${\mathrm{Ne}}^{+}+{\mathrm{Ne}}^{+}$ fragments at 10 eV photoelectron energy. The polarization vector ($\mathit{\epsilon }$) of the incident light and the dissociation direction of ion pairs are indicated. Filled circles with statistical error bars: experimental data; thick curves: fitting to data by Legendre polynomials up to tenth order, or by $[1+\beta P_2(\cos \theta )]$; thin (black) curves: localized (a) and delocalized (b) theoretical MF-PADs which are normalized at the maximum data. In (b) $1{\sigma }_g^{-1}$ (blue) and $1{\sigma }_u^{-1}$ (red) components of MF-PADs are shown. Theoretical LF-PADs (broken curves) are hardly seen due to the overlap with fitting curves (see text).Reuse & Permissions

Figure 3

Calculated potential energy curves for the singly, doubly, and triply ionized states of ${\mathrm{Ne}}_2$. At each dissociation limit, holes on each Ne atom are explicitly indicated, in which 0 represents the neutral electronic configuration. Potential curves are shifted according to the corresponding ionization energies [30, 31] at the separated-atom limit. The dominant Auger final states are shown with the relative intensities [30] in parentheses.Reuse & Permissions