The inelastic collisions of electrons with LiF molecules at electron e
nergies below 100 eV and the resulting optical emission of atoms were
studied using extended crossed beams. Sixteen spectral lines of the li
thium atom were detected at 250 - 670 nm; line intensities of other po
ssible objects were below the detection limit. Optical excitation func
tions were measured for six lines of Li I. The regularities in Li I di
ssociative excitation by e-LiF collisions were established.