Field evaporation of metals, alloys and compounds as a base for creation of point ion sources for nanotechnology

In the work the results of studying of field evaporation of some metals, alloys and compounds are analyzed for use of these results for creation of the point sources of electrons and ions. The processes of field evaporation at temperatures are higher room have complicated character owing to complicated character of change of the form of the emitter during evaporation and change of the composition of a surface of the emitter. Field evaporation at various temperatures allows to create the emitters of various ions, both atomic, and molecular or even cluster. Varying modes of evaporation, it is possible to obtain currents of the charged particles, of various composition and localization on a surfaces of an emitter.