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Open AccessArticle

Spatial Molecular AlO Temperature Distributions in Laser-Induced Plasma

1
Physics and Applied Physics Department, University of Massachusetts of Lowell, 265 Riverside Street, Lowell, MA 01854, USA
2
Sandia National Laboratories, 1515 Eubank, Albuquerque, NM 87115, USA
3
Physics and Astronomy Department, University of Tennessee, University of Tennessee Space Institute, Center for Laser Applications, 411 B.H. Goethert Parkway, Tullahoma, TN 37388, USA
*
Author to whom correspondence should be addressed.
Atoms 2019, 7(3), 86; https://doi.org/10.3390/atoms7030086
Received: 10 July 2019 / Revised: 15 August 2019 / Accepted: 1 September 2019 / Published: 4 September 2019
(This article belongs to the Special Issue Laser Plasma Spectroscopy Applications)
Spatially resolved, line-of-sight measurements of aluminum monoxide emission spectra in laser ablation plasma are used with Abel inversion techniques to extract radial plasma temperatures. Contour mapping of the radially deconvolved signal intensity shows a ring of AlO formation near the plasma boundary with the ambient atmosphere. Simulations of the molecular spectra were coupled with the line profile fitting routines. Temperature results are presented with simultaneous inferences from lateral, asymmetric radial, and symmetric radial AlO spectral intensity profiles. This analysis indicates that shockwave phenomena in the radial profiles, including a temperature drop behind the blast wave created during plasma initiation were measured. View Full-Text
Keywords: molecular spectroscopy; diatomic spectroscopy; Abel transform; plasma spectroscopy; laser-induced breakdown spectroscopy; laser-induced plasma; plasma dynamics molecular spectroscopy; diatomic spectroscopy; Abel transform; plasma spectroscopy; laser-induced breakdown spectroscopy; laser-induced plasma; plasma dynamics
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MDPI and ACS Style

Surmick, D.M.; Dagel, D.J.; Parigger, C.G. Spatial Molecular AlO Temperature Distributions in Laser-Induced Plasma. Atoms 2019, 7, 86.

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