DSpace About DSpace Software

Dyuthi @ CUSAT >
Photonics >
Faculty >
Dr.C P Girijavallabhan >

Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/2443

Title: Spatial and temporal analysis of laser induced plasma from a polymer sample
Authors: Padmaja, G
Ravi Kumar, A V
Radhakrishnan, P
Nampoori, V P N
Vallabhan, C P G
Keywords: laser induced plasma
Issue Date: 1993
Publisher: IOP
Abstract: Spatial and temporal analyses of the spectra of the laser induced plasma from a polytetrafluroethylene (PTFE) target obtained with the 1.06 mu m radiation from a Q-switched Nd:YAG laser have been carried out. The spatially resolved spectra of the plasma emission show that molecular bands of C2 (Swan bands) and CN are very intense in the outer regions of the plasma, whereas higher ionized states of carbon are predominant in the core region of the plasma emission. The vibrational temperature and population distribution in the different vibrational levels have been studied as a function of laser energy. From the time resolved studies, it has been observed that there exist fairly large time delays for the onset of emission from all the species in the outer region of the plasma. The molecular bands in each region exhibit much larger time delays in comparison to the ionic lines in the plasma.
URI: http://dyuthi.cusat.ac.in/purl/2443
Appears in Collections:Dr.C P Girijavallabhan

Files in This Item:

File Description SizeFormat
Dyuthi-P0304.pdfPDF627.23 kBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback