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
Received: 14 June 2019 / Revised: 26 June 2019 / Accepted: 26 June 2019 / Published: 29 June 2019
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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
, 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
diagnostics. Integral inversions interrogate spatial distributions of the plasma expansion. Applications include laboratory and stellar astrophysics plasma diagnosis.
This is an open access article distributed under the Creative Commons Attribution License
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MDPI and ACS Style
Parigger, C.G. Measurements of Gaseous Hydrogen–Nitrogen Laser-Plasma. Atoms 2019, 7, 61.
Parigger CG. Measurements of Gaseous Hydrogen–Nitrogen Laser-Plasma. Atoms. 2019; 7(3):61.
Parigger, Christian G. 2019. "Measurements of Gaseous Hydrogen–Nitrogen Laser-Plasma." Atoms 7, no. 3: 61.
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