Volume 79, Number 3, August 2007
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||20 July 2007|
Expansion of an ablation plume in a buffer gas and cluster growth
Dipartimento di Ingegneria Nucleare, Centre of Excellence “Nano Engineered MAterials and Surfaces - NEMAS”, Politecnico di Milano - Via Ponzio 34-3, 20133, Milano, Italy
Corresponding author: email@example.com
Accepted: 20 June 2007
The mixed propagation model is introduced to describe the expansion through a buffer gas of the plasma produced by pulsed-laser ablation. After testing the model against the results of representative experiments, the deduced expansion parameter values are used to model the growth of clusters that are nucleated in the plume. For plumes of silicon and tungsten propagating in helium as well as of tantalum propagating in oxygen cluster size is evaluated and compared (silicon; tungsten) with experimental data.
PACS: 52.38.Mf – Laser ablation / 82.33.Xj – Plasma reactions (including flowing afterglow and electric discharges) / 81.07.-b – Nanoscale materials and structures: fabrication and characterization
© Europhysics Letters Association, 2007
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