Self-diffusion in naphthalene single crystals

(Received 6 October 1992, accepted in final form 4 December 1992)

Abstract
Molecular mobility in organic molecular crystals was studied by means of tracer diffusion experiments: self-diffusion of naphthalene into naphthalene single crystals was measured. Three self-diffusion tensors are determined from measurements in different crystallographic directions, at three temperatures (338, 343 and 348 K). The principal axes and the anisotropy of self-diffusion are deduced. The experimental activation energies are determined and compared with results from the literature.