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Crater drilling enhancement obtained in parallel non-collinear double-pulse laser ablation

  Articoli su Riviste JCR/ISI  (anno 2010)

Autori:  Cristoforetti G., Legnaioli S., Palleschi V., Tognoni E., Benedetti P

Affiliazione Autori:  Applied Laser Spectroscopy Laboratory, Institute for Chemical-Physical Processes, Research Area of National Research Council, Via G. Moruzzi, 1, 56124 Pisa, Italy

Riassunto:  In order to investigate the double-pulse ablation mechanism, two parallel but non-collinear laser beams, delayed with respect to each other by 1 mu s, were focussed on an aluminium sample, so that a lateral distance of 600 microns exists between the centres of the two craters and no superposition of the laser-ablation zones is present. The use of such configuration results in a signal and in a plasma mass enhancement with respect to the single-pulse case almost equal to that obtained in the double-pulse collinear case. However, such a non-collinear geometry evidences a much more effective drilling of the surface. Such unexpected drilling seems to be related to a hydrodynamic drainage out of aerosol and molten material, hindering its re-deposition in and around the crater.

Rivista/Giornale:  APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume n.:  98 (1)      Pagine da: 219  a: 225
DOI: 10.1007/s00339-009-5379-8

*Impact Factor della Rivista: (2010) 1.765   *Citazioni: 11
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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