Metal fluxes from surface and plasma

The optimal metal fluxes are evaluated if they result from excitation of a metallic surface. For the other method of generation of a metal flux based on destruction of metal-containing molecules in a dense afterglow plasma a model is considered of equalized binding energies for each molecule bond. T his model allows us to analyze the optimal parameters of a resulting cluste r beam under real conditions when breaking of molecule bonds in collisions with buffer gas atoms is accompanied by heat transport and leads to cooling of a gas that in turn causes a decrease of the decay rate of molecules and radicals, Estimated on the basis of this model maximum metal fluxes from d ecay of metal-containing molecules exceed those obtained from a metal surfa ce by approximately three orders of magnitude. The metal flux from a metal surface can be increased by one order of magnitude in the scheme when metal lic atoms forming from the metallic surface are transformed into clusters. This method of generation of a metal flux is analyzed.