A New Experimental Method of the Determination of the Evaporating Fields
نویسنده
چکیده
A new experimental method of the determination of the evaporating fields F, 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 A and one or some atoms on the top and well-known methods of Fev determination are not suitable. Besides that the values of Fev for this small objects are considerable less in comparison with the F,, 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 P by means of Fowler-Nordheim plots and by the applicability of Fowler-Nordheim theory to the microprotrusions.
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تاریخ انتشار 2016