Measurements of Gaseous Hydrogen–Nitrogen Laser-Plasma
Physics and Astronomy Department, University of Tennessee, University of Tennessee Space Institute, Center for Laser Applications, 411 B.H. Goethert Pkwy, Tullahoma, TN 37388, USA
Atoms 2019, 7(3), 61; https://doi.org/10.3390/atoms7030061
Received: 14 June 2019 / Revised: 26 June 2019 / Accepted: 26 June 2019 / Published: 29 June 2019
(This article belongs to the Special Issue Laser Plasma Spectroscopy Applications)
This work communicates laser-plasma experiments in a gaseous mixture of hydrogen and nitrogen. Time-resolved spectroscopy measures the first four Balmer-series hydrogen lines together with selected neutral and ionized nitrogen lines. Optical breakdown plasma is generated in a 1:1 hydrogen:nitrogen mixture at ambient temperature and 0.27-atm pressure. Time-resolved spectroscopy records emitted radiation with spatial resolution along the slit height for the H , H , H , and H lines. For 13 selected time delays from 0.25 s to 3.25 s and 0.025 s gate-widths, micro-plasma diagnostics is evaluated. Of interest are the peak separation and width of H and width of H for electron densities in the range of 0.1 to 1.0 , and comparisons with H and H diagnostics. Integral inversions interrogate spatial distributions of the plasma expansion. Applications include laboratory and stellar astrophysics plasma diagnosis.
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Keywords:
atomic and molecular spectroscopy; time-resolved spectroscopy; laser-plasma; laser-induced optical breakdown; stellar astrophysics spectra; white dwarf stars; hydrogen
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MDPI and ACS Style
Parigger, C.G. Measurements of Gaseous Hydrogen–Nitrogen Laser-Plasma. Atoms 2019, 7, 61.
AMA Style
Parigger CG. Measurements of Gaseous Hydrogen–Nitrogen Laser-Plasma. Atoms. 2019; 7(3):61.
Chicago/Turabian StyleParigger, Christian G. 2019. "Measurements of Gaseous Hydrogen–Nitrogen Laser-Plasma" Atoms 7, no. 3: 61.
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