A New Experimental Method of the Determination of the Evaporating Fields

Abstract
A new experimental method of the determination of the evaporating fields F_ev based on Fowler-Nordheim theory is described. This method fits to any materials both refractory and fusible. Especially this method is effective for the thermo-field microprotrusions. The microprotrusions have usually the radii of curvature r≈10-100 Å and one or some atoms on the top and well-known methods of F_ev determination are not suitable. Besides that the values of F_ev for this small objects are considerable less in comparison with the F_ev for the "large" tips. This method requires for realisation only a simple field electron microscope. The exactness of this method is limited by the exactness of the determination of the field factor ß by means of Fowler-Nordheim plots and by the applicability of Fowler-Nordheimtheory to the microprotrusions.