INFLUENCES OF PREPARATION CONDITIONS ON LASER-ABLATED SI NANO-PARTICLE FORMATION PROCESSES OBSERVED BY IMAGING LASER SPECTROSCOPY

The behaviors of atomic species and nano-particles in the laser-ablate d plume were investigated by two-dimensional laser-induced fluorescenc e (2D-LIF) and UV Rayleigh scattering (2D-RS) imaging techniques. The images observed in the ablation of silicon (Si) in a He ambient are pr esented for various processing conditions. The temporal behavior of Si -2 molecules, which were generated by the clustering of Si atoms, was also investigated. (C) 1998 Elsevier Science B.V.