ISSN:
1434-6079
Keywords:
79.20.Rf
;
34.50.Lf
;
79.20.Nc
;
81.60.Cp
;
36.40.+d
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We review the processes which have been observed from collisions between alkali-halide clusters and solid surfaces. Soft impact of nanocrystalline NanF n−1 + clusters against solid surfaces causes them to cleave along the lowest energy (100) plane. At higher collision energies (Ei〉1 eV/atom), an evaporative cascade occurs which is characteristic of a transformation of the nanocrystal to a molten state. Efficient F− transfer from the cluster to the surface can occur for the larger clusters (〉60 atoms) scattering from Si(111), in direct competition with the cleaving channel at low energies. In this regime, strong bonds can form between the F− and silicon surface. The reaction probability increases with cluster size indicating that an impact-initiated shock wave is needed to enhance the reactive process.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01429152
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