Published 2011 | Version v1
Journal article Metadata-only

Laser-Induced Optical Breakdown in Methane: Diagnostic Using H-Gamma Line Broadening

Creators

  • 1. Center for Laser Applications, The University of Tennessee Space Institute, 411 B.H. Goethert Parkway, Tullahoma, TN 37388 (Ukraine)
  • 2. 206 Allison Laboratory, Department of Physics, Auburn University, Auburn, AL 36849 (Ukraine)

Description

Measurements and analysis are reported of Stark-broadened profiles of the H-gamma line emitted from plasma formed by Laser-Induced Optical Breakdown (LIOB) in a pulsed methane flow. Electron densities Ne are deduced for 18 instants of time in the range between 0.4 and 2.1 microseconds after LIOB and for 2 different gas pressures. The obtained values of Ne are in a good agreement with the corresponding values found previously from Stark-broadened profiles of the H-alpha and H-beta lines.

Additional details

Publishing Information

Journal Title
International Journal of Spectroscopy (Online)
Journal Volume
2011
Journal Page Range
p. 4
ISSN
1687-9457

INIS

Country of Publication
Egypt
Country of Input or Organization
Egypt
INIS RN
42084096
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
BALMER LINES; BOLTZMANN EQUATION; ELECTRON DENSITY; HYDROGEN; LASERS; LINE BROADENING; METHANE; NEON; OPACITY; PRESSURE RANGE PA
Descriptors DEC
ALKANES; DIFFERENTIAL EQUATIONS; ELEMENTS; EQUATIONS; FLUIDS; GASES; HYDROCARBONS; INTEGRO-DIFFERENTIAL EQUATIONS; KINETIC EQUATIONS; NONMETALS; OPTICAL PROPERTIES; ORGANIC COMPOUNDS; PARTIAL DIFFERENTIAL EQUATIONS; PHYSICAL PROPERTIES; PRESSURE RANGE; RARE GASES