S. Ikeda et al., S(Q,OMEGA) MAPS OF KHCO3 SINGLE-CRYSTALS AND VIBRATIONAL WAVE-FUNCTIONS FOR THE HYDROGEN-BOND, Physica. B, Condensed matter, 213, 1995, pp. 661-663
S(Q,omega) maps of intensity for different vibrational modes in KHCO3
single crystals were measured using the MARI spectrometer (Rutherford
Appleton Laboratory, UK). The momentum transfer direction, Q, with res
pect to the hydrogen-bond direction was changed continuously. Measurem
ents have been performed, with momentum transfer either parallel or pe
rpendicular to the dimer plane. S(Q(nu OH), (Q delta OH))(omega) and S
(Q(nu OH), Q(gamma OH))(omega) contour maps are presented for various
vibrational modes.