Eur. Phys. J. D (2014) 68: 223
https://doi.org/10.1140/epjd/e2014-50053-3

Regular Article

Spectroscopic study of the laser-induced indium plasma

University of Belgrade, Faculty of Physics, P.O. Box 368, 11000 Belgrade, Serbia

^a e-mail: milosb@ff.bg.ac.rs

Received: 18 January 2014
Received in final form: 9 May 2014
Published online: 12 August 2014

Abstract

We report experimental research of the laser-produced indium plasma in hydrogen, argon and residual atmospheric ambient conditions. Note on general plasma behavior and morphology is presented. On the basis of intensity ratio of the two intense neutral resonance spectral lines (In I 410.2 nm and 451.1 nm), self-absorption was found to be almost negligible in case of argon environment at a pressure of 6650 Pa. Under these conditions, the first Stark widths (W) and shifts (d) measurements were performed as well. The resulting synthetic Lorentz profiles, based on the hyperfine structure of these two lines and corresponded W values, were calculated in order to reproduce measured W_m in case of particular electron temperature (T) and number density (N). These results should be of interest to the upcoming theoretical calculations concerning neutral indium spectral lines and also for various diagnostic applications.