NDLI: Temporal and spatial evolution of C2 in laser induced plasma from graphite target

Content Provider	CUSAT-Thesis
Author	Harilal, S. S. Issac, Riju C. Bindhu, C. V. Nampoori, V. P. N. Vallabhan, C. P. G.
Abstract	Laser ablation of graphite has been carried out using 1.06mm radiation from a Q-switched Nd:YAGlaser and the time of flight distribution of molecular C2 present in the resultant plasma isinvestigated in terms of distance from the target as well as laser fluences employing time resolvedspectroscopic technique. At low laser fluences the intensities of the emission lines from C2 exhibitonly single peak structure while beyond a threshold laser fluence, emission from C2 shows a twinpeak distribution in time. The occurrence of the faster velocity component at higher laser fluencesis explained as due to species generated from recombination processes while the delayed peak isattributed to dissociation of higher carbon clusters resulting in the generation of C2 molecule.Analysis of measured data provides a fairly complete picture of the evolution and dynamics ofC2 species in the laser induced plasma from graphite.
File Format	PDF
Journal	J Appl Phys
Volume Number	80
Issue Number	6
Language	English
Publisher	American Institute of Physics
Access Restriction	Open
Subject Keyword	spatial distribution graphite laser induced plasma
Content Type	Text
Resource Type	Article

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