Figure 2: Water chain eigenvalues of the levels above EF and their elastic variation with the phonon mode generalized coordinate X, with the FCB shown in red and the SCB in blue.

The dashed vertical lines indicate the phononic zero point motion and the solid ones
. The horizontal dotted lines indicate the energies E = 5.3 eV and E = 6.7 eV that will be used in the electron-gun injection section.