THE STUDY OF WHISKER GROWTH BY THE MONTE-CARLO METHOD

The peculiarities of tungsten whisker growth by the diffusion-dislocat ion and vapour-liquid-solid mechanisms are studied. The model accounts for the basic physical causes of whisker growth in halogen lamps obse rved in experiments. The simulation by the Monte Carlo technique takes into account local supersaturation fluctuations, caused by certain im purities, their frequency of appearance and their duration. The role o f impurities in each of the growth mechanisms is shown and proved by t he morphology of whiskers obtained in experiments.