Hypersonicheliumflowfield measurements with the resonant Doppler velocimeter Academic Article

abstract

• A low density of sodium atoms seeded into a hypersonic helium flow is used to quantitatively determine flow-field properties. By observing fluorescence from a point as a single-mode dye laser is tuned through the sodium D 2 line, the absorption profile may be found. This profile is fitted to a properly weighted sum of Voigt functions to yield the velocity, temperature, and pressure at the observation point. The fluorescence is strong enough to use this technique for qualitative flow-field visualization.

authors

• Miles, Richard

published proceedings

• Applied Physics Letters

author list (cited authors)

• Zimmermann, M., & Miles, R. B.

publication date

• January 1, 1980 11:11 AM

publisher

• AIP Publishing  Publisher

published in

• Applied Physics Letters  Journal

Digital Object Identifier (DOI)

• 10.1063/1.91784

end page

• 887

issue

• 10