Effect of magnetic field upon plasmas produced by laser-induced gas breakdown
- 1 January 1974
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 45 (1), 97-102
- https://doi.org/10.1063/1.1663026
Abstract
The effect of a magnetic field upon the properties of a plasma created by CO2 laser‐induced gas breakdown in helium has been investigated. Spatially and temporally resolved temperatures in the 7–20‐eV range were observed using the spectral‐line ratio technique, in particular the He II 468.6‐nm line‐to‐continuum ratio. The continuum measurements were also employed to obtain relative values of electron density. The temporal dependences of electron density and temperature indicate that energy is lost from the plasma by an adiabaticlike expansion. The presence of the magnetic field significantly decreases both the energy and density loss rates.Keywords
This publication has 8 references indexed in Scilit:
- Low-pressure gas breakdown with CO2 laser radiationApplied Physics Letters, 1973
- Effect of Magnetic Field on Electron Density Growth during Laser-Induced Gas BreakdownPhysical Review Letters, 1972
- Infrared-Laser Heating of Dense Arc PlasmasPhysics of Fluids, 1972
- Thermal Decay of an Infrared-Laser-Heated Arc PlasmaPhysical Review Letters, 1972
- Evidence for the Heating of a High-Density θ Pinch When Transversely Irradiated by a Pulsed CO2 Laser BeamApplied Physics Letters, 1972
- Structure of the Plasma Fireball Produced by a CO2 LaserPhysics of Fluids, 1971
- Spectroscopic Studies of a Laser-Produced Plasma in HeliumJournal of Applied Physics, 1969
- Electron Recombination in Laser-Produced Hydrogen PlasmaJournal of Applied Physics, 1966