Recombination lasing in a magnetoplasmadynamic arcjet

Journal Article · Tue Jan 01 00:00:00 EST 1980 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.327402· OSTI ID:5583600

Campbell, E M; Jahn, R G; von Jaskowsky, W F; Clark, K E

The plasmadynamic recombination laser concept is verified experimentally in a high-power quasisteady MPD arcjet operating at 4 kA and 12 g/sec of argon. Measurements of the spatial variation of electron temperature, electron density, and population densities in the arc exhaust flow confirm that inverted populations of the 4p to 4s Ar II transitions are established by collisional-radiative recombination of the Ar III ion. Using an optical cavity aligned transversely to the flow, recombination lasing of seven such transitions, 5145, 4880, 4764, 4727, 4658, 4579, and 4545 A, is observed spectrophotograpically and photoelectrically over the entire 1-msec discharge.

• Research Organization: Princeton University, Princeton, New Jersey 08544
• OSTI ID: 5583600
• Journal Information: J. Appl. Phys.; (United States), Vol. 51:1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
LASERS
RECOMBINATION
PLASMA JETS
MAGNETOHYDRODYNAMICS
ARGON
ARGON IONS
CAVITIES
DATA
ELECTRON DENSITY
ELECTRON TEMPERATURE
FLOW RATE
MAGNETIC FIELDS
SPATIAL DISTRIBUTION
WAVELENGTHS
CHARGED PARTICLES
DISTRIBUTION
ELEMENTS
FLUID MECHANICS
HYDRODYNAMICS
INFORMATION
IONS
MECHANICS
NONMETALS
RARE GASES
420300* - Engineering- Lasers- (-1989)