Effect of analyte concentration on the laser-induced plasma temperature and electron density in liquid matrix

Rai, Nilesh Kumar and Pandhija, Shiwani and Rai, Shikha and Pathak, Ashok Kumar and Rai, AK (2013) Effect of analyte concentration on the laser-induced plasma temperature and electron density in liquid matrix. In: Spectroscopy Letters, 46 (3). pp. 218-226.

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Abstract

In the present work, we report spectroscopic studies of laser-induced plasmas produced by focusing the second harmonic (532nm) of a Nd:YAG laser onto the laminar flow of a liquid containing chromium. The plasma temperature is determined from the coupled Saha-Boltzmann plot and the electron density is evaluated from the Stark broadening of an ionic line of chromium Cr(II)] at 267.7nm. Our results reveal a decrease in plasma temperature with an increase in Cr concentration up to a certain concentration level; after that, it becomes approximately constant, while the electron density increases with an increase in analyte (Cr) concentration in liquid matrix.

Item Type:	Journal Article
Publication:	Spectroscopy Letters
Publisher:	Taylor and Francis Group
Additional Information:	Copyright of this article belongs to Taylor and Francis Group.
Keywords:	Chromium; Laser-Induced Plasma Temperature and Electron Density; LIBS; Liquid Matrix
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	02 Jan 2014 06:40
Last Modified:	25 Oct 2018 07:26
URI:	http://eprints.iisc.ac.in/id/eprint/48122

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