TY - JOUR
T1 - Phonon Measurements and Model Calculations for Naphtalene-d8
AU - Mackenzie, Gordon A.
AU - Pawley, G. S.
AU - Dietrich, O. W.
PY - 1977
Y1 - 1977
N2 - Measurements of the phonon dispersion curves in naphthalene-d8, (deuteration >99%), taken at 77K are presented. The experiments were done on two crystals, using the triple-axis neutron spectrometers at the medium flux reactor, DR3 at Riso. Most of the external or lattice modes have been measured and assigned, but a small proportion of the modes were too weakly scattering to be positively identified. A least-squares minimisation procedure was used to improve the fit between the model and experiment. The agreement obtained is given by chi =2.7. These measurements show that on a high-flux reactor it will be possible to identify and measure all the lattice modes for crystals of the complexity of naphthalene.
AB - Measurements of the phonon dispersion curves in naphthalene-d8, (deuteration >99%), taken at 77K are presented. The experiments were done on two crystals, using the triple-axis neutron spectrometers at the medium flux reactor, DR3 at Riso. Most of the external or lattice modes have been measured and assigned, but a small proportion of the modes were too weakly scattering to be positively identified. A least-squares minimisation procedure was used to improve the fit between the model and experiment. The agreement obtained is given by chi =2.7. These measurements show that on a high-flux reactor it will be possible to identify and measure all the lattice modes for crystals of the complexity of naphthalene.
U2 - 10.1088/0022-3719/10/19/009
DO - 10.1088/0022-3719/10/19/009
M3 - Journal article
SN - 0022-3719
VL - 10
SP - 3723
EP - 3725
JO - Journal of Physics C: Solid State Physics
JF - Journal of Physics C: Solid State Physics
IS - 19
ER -