STUDY OF INTERNAL VIBRATIONS OF DL-CAMPHENE BY IINS METHOD

Elastic and inelastic neutron scattering study of dl-camphene has been performed in the temperature range from 295 to 10K. The IINS spectra have been taken on two spectrometers of differnt resolving power. In t he plastic phase vibrational spectra are broadened as a consequence of stochastic reorientation of camphene molecule, and the characteristic frequencies of intramolecular vibrations cannot be observed. These fr equencies in dl-camphene can only be observed below the phase transiti on temperature. An interpretation of the frequency modes in the phonon spectra is proposed.