Sc. Ke et al., SYMMETRY ASSIGNMENTS OF RAMAN-SCATTERING BY F-CENTERS IN CALCIUM-OXIDE( AND F), Journal of physics. Condensed matter, 7(35), 1995, pp. 7063-7067
Data on the Raman scattering of F and F+ centres in CaO are recorded.
Symmetry assignments of the Raman effect of F+ centres are in agreemen
t with the F+ emission spectrum measurements of Hughes, Pells and Send
er. Furthermore, polarization results show that the frequency separati
on between T-2g and E(g) modes is about 17 cm(-1). The vibrational mod
es of F centres are also discussed.