[institut] Seminar Laboratorije za spektroskopiju plazme i lasere

[Sonja Jovicevic]

Postovane koleginice i kolege,

 U sredu 21. 11. 2012 u sali ZVONKO
MARIC, sa pocetkom u 12 casova 

  DR JÖRG HERMANN _ LP3, CNRS -
AIX-MARSEILLE UNIVERSITY, LUMINY, MARSEILLE, FRANCE_

ce odrzati seminar
pod naslovom

 PROPERTIES OF PLASMAS PRODUCED BY LASER ABLATION WITH
SINGLE AND DOUBLE PULSES

ABSTRACT. Pulsed laser ablation has attracted
a strongly increasing interest over the past two decades. The advances
in the understanding of laser-material interactions as well as the
technological progress in compact and reliable laser systems made laser
ablation promising for many applications such as thin film deposition,
nanostructuring of materials, surface treatment, nanoparticle generation
and material analysis. Due to the high power density of focused laser
radiation, pulsed laser ablation leads to the formation of a plasma
characterized by large initial values of temperature and density. The
plume undergoes fast expansion during which the temperature and density
rapidly decrease. Recent investigations demonstrated that the
irradiation with so-called "double-pulses" may improve the properties of
the laser-induced plasmas in the view of different applications. In the
present paper, we discuss the physical mechanisms responsible for the
plume changes that occur when an additional delayed laser pulse is
applied.

Srdacan pozdrav

Sonja Jovicevic
-- 
Institute of Physics
Belgrade
Pregrevica 118, 11080 Belgrade, Serbia
http://www.ipb.ac.rs/

 
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