Coherent anti-Stokes Raman spectroscopic measurement of air entrainment in argon plasma jets

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6336404

Fincke, J R; Rodriquez, R; Pentecost, C G

The concentration and temperature of air entrained into an argon plasma jet has been measured using coherent anti-Stokes Raman spectroscopy (CARS). The flow field is characterized by a short region of well behaved laminar flow near the nozzle exit followed by an abrupt transition to turbulence. Once the transition to turbulence occurs, air is rapidly entrained into the jet core. The location of the transition region is thought to be driven by the rapid cooling of the jet and the resulting increase in Reynolds number. 8 refs., 6 figs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls, ID (USA)
• Sponsoring Organization: DOE/NE
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6336404
• Report Number(s): EGG-M-89489; CONF-900466--91; ON: DE91001936
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
AIR
ARGON
DEPOSITION
DIAGNOSTIC TECHNIQUES
ELEMENTS
FLUIDS
GASES
LASER SPECTROSCOPY
NONMETALS
PLASMA JETS
RAMAN SPECTROSCOPY
RARE GASES
REYNOLDS NUMBER
SPECTROSCOPY
SURFACE COATING
TEMPERATURE DISTRIBUTION