Microscopic basis of free volume theory by positron annihilation spectroscopy and quaielastic neutron scattering
We have examined the free volume theory on the basis of positron annihilation lifetime spectroscopy and queasielastic neutron scattering data to give a microscopic basis to the theory.
Free Volume Theory
(Cohen and Turnbull, 1959)
Free volume theory in terms of mean square displacement <u2>
Relation between viscosity and <u2>
Distribution of <u2>