Journal of Atomic, Molecular, and Optical Physics
Volume 2011 (2011), Article ID 504764, 7 pages
Studies on the ns-IR-Laser-Induced Plasma Parameters in the Vanadium Oxide
Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
Received 15 June 2011; Accepted 12 August 2011
Academic Editor: Ali Hussain Reshak
Copyright © 2011 Arnab Sarkar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We report spectroscopic studies of laser-induced plasma (LIP) produced by ns-IR-Nd:YAG laser light pulses of different energies onto four different oxides of vanadium (VO, V2O3, VO2, and V2O5) in air under atmospheric pressure. For each oxide with a different oxidation state of vanadium, both electron density and plasma temperature were calculated for different time delays and laser pulse energies. The plasma temperature was determined from Boltzmann plot method, whereas the electron number density was estimated from the Saha equation. The decay rates for plasma temperature as well as electron density were observed to follow power law and were independent of the nature of vanadium oxide. These investigations provide an insight to optimize various parameters during LIBS analysis of vanadium-based matrices.