PMID: 15250560Jul 15, 2004Paper

Spatial and temporal evolution of argon sparks

Applied Optics
Sivanandan S Harilal

Abstract

Optical emission spectroscopic studies of laser-created argon sparks are carried out. Pulses of 532 nm and 8 ns from a frequency-doubled Nd:YAG laser are used to create an argon spark at 1 atm. Gated photography of 2 ns is used to investigate spark evolution at early times. Electron temperature and density measurements are made from the spectral data. The Stark broadening of emission lines is used to determine the electron density, and the Boltzmann plot of the singly ionized argon-line intensities is exploited for determination of the electron temperature. The dependence on electron temperature and density on different experimental parameters, such as distance from the focal point, delay time after the initiation of the spark, and laser energy, are discussed.

References

Feb 7, 1992·Geophysical Research Letters·D S JebensW J Borucki
Nov 13, 2003·Applied Spectroscopy·Francesco FerioliSteven G Buckley
Dec 3, 2003·Applied Spectroscopy·John D HyblSteven G Buckley
Sep 24, 2001·Optics Express·Y L Chen, J W Lewis
Feb 20, 1993·Applied Optics·J B Simeonsson, A W Miziolek

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Citations

Dec 8, 2017·Applied Optics·Ghaneshwar GautamKyle A Drake
Aug 7, 2007·Applied Optics·Antonio Borghese, Tonia M Di Palma
May 23, 2012·Applied Optics·R Mark RennieEric J Jumper
Jul 24, 2013·Applied Spectroscopy·Sven MerkNicoló Omenetto
Feb 7, 2012·Applied Optics·Mathew PolekA Hassanein

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