
TY  - JOUR
A1  - Gupta, NP 
T1  - Dispersion of Phonons in Ideal Crystals
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1969
VL  - 22
IS  - 4
SP  - 471
EP  - 480
KW  - 
UR  - https://doi.org/10.1071/PH690471 
N2  - A quasiharmonic central force rigid-atom model has been used to study the lattice vibrations of frozen rare gases. The model takes care of interactions up to fourth neighbour and estimates zero-point energy and its volume derivatives by the Debye theory of specific heats. The theoretical frequency distribution and phonon dispersion curves are found to compare reasonably well with the available experimental data. Various causes of the discrepancies and possibilities of improvement of the results are discussed. 
ER  -

