title: Planar Rayleigh scattering results in helium-air mixing experiments in a Mach-6 wind tunnel.
abstract: Planar Rayleigh scattering measurements with an argon-fluoride excimer laser are performed to investigate helium mixing into air at supersonic speeds. The capability of the Rayleigh scattering technique for flow visualization of a turbulent environment is demonstrated in a large-scale, Mach-6 facility. The detection limit obtained with the present setup indicates that planar, quantitative measurements of density can be made over a large cross-sectional area (5 cm x 10 cm) of the flow field in the absence of clusters.
authors: B
authors: B
authors: Shirinzadeh
authors: M E
authors: ME
authors: Hillard
authors: R J
authors: RJ
authors: Balla
authors: I A
authors: IA
authors: Waitz
authors: J B
authors: JB
authors: Anders
authors: R J
authors: RJ
authors: Exton