TITLE

Experimental observations and modeling of nanoparticle formation in laser-produced expanding plasma

AUTHOR(S)
Lescoute, E.; Hallo, L.; H├ębert, D.; Chimier, B.; Etchessahar, B.; Tikhonchuk, V. T.; Chevalier, J.-M.; Combis, P.
PUB. DATE
June 2008
SOURCE
Physics of Plasmas;Jun2008, Vol. 15 Issue 6, p063507
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Interaction of a laser beam with a target may generate a high velocity expanding plasma plume, solid debris, and liquid nano- and microparticles. They can be produced from plasma recombination, vapor condensation or by a direct expulsion of the heated liquid phase. Two distinct sizes of particles are observed depending on the temperature achieved in the plasma plume: Micrometer-size fragments for temperatures lower than the critical temperature, and nanometer-size particles for higher temperatures. The paper presents experimental observations of fragments and nanoparticles in plasma plumes created from gold targets. These results are compared with theoretical models of vapor condensation and microparticle formation.
ACCESSION #
32970339

 

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