A Study of Time and Space Correlations in Field Emission Current Fluctuations with a Fiber-Optical Technique |
| A.A. Dadykin and A.G. Naumovets Institute of Physics, Ukrainian Academy of Sciences, Prospekt Nauki 46, 252650 Kiev 28, USSR |
| Received: May 21, 1991; in final version July 19, 1991 |
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| A new technique of measurements of field emission current fluctuations is proposed. The technique uses fiber optics and offers such advantages as the possibility to easily vary the geometry of the probed regions and the distance between them on the field emitter. The correlation functions of field emission current fluctuations have been measured with this technique for O/W(110), H/W(110), Si(111) and Na/Si(111) systems. Some data on surface diffusion coefficients are derived from the measurements. |
| DOI: 10.12693/APhysPolA.81.131 PACS numbers: 79.70.+q, 05.40.+j |