Journal article
Phonon Measurements and Model Calculations for Naphtalene-d8
UNEP Risoe Centre on Energy, Climate and Sustainable Development (URC), Systems Analysis Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Systems Analysis Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
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.
Language: | English |
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Year: | 1977 |
Pages: | 3723-3725 |
ISSN: | 00223719 and 17473802 |
Types: | Journal article |
DOI: | 10.1088/0022-3719/10/19/009 |