Figure 1

Intensities of the ICD electrons measured in coincidence with the photoelectrons emitted at different directions after $2s$ ionization of ${\mathrm{Ne}}_2$ (top) and with the Auger electrons after $1s$ ionization of ${\mathrm{Ne}}_2$ (bottom). All spectra are normalized to the same integral. Typical errors are shown on top by bars.Reuse & Permissions

Figure 2

Modulus squared of the wave packet propagating on the PEC of the state ${\mathrm{Ne}}^{2+}(2s^{-1}2p^{-1}{}^{1}P)\mathrm{Ne}$ decaying by ICD computed at different times. The excitation of the compressing mode (left panels), vibrational recoil free mode (middle panels), and stretching mode (right panels) are shown. The maximal value of the recoil momentum transferred to the nuclear vibrational motion, $|k_e|/2=3.77\mathrm{a}.\mathrm{u}.$, which corresponds to the Auger-electron energy $E_{k_e}=772\mathrm{eV}$, was used in the calculations. Note that due to ICD the norm of the wave packet decreases in time.Reuse & Permissions

Figure 3

Computed spectra for normal ICD of ${\mathrm{Ne}}_2$ (top) and ICD after Auger decay (bottom). The spectra were averaged over the directions of the recoil momentum (see legend). Model spectra simulating the additional presence of ETMD (see text) for stretching and compressing modes are also shown on the lower panel. All spectra are normalized to the same integral.Reuse & Permissions