Accession Number:

AD1057088

Title:

Doppler-Free Velocimetry in Hypersonic Flow

Descriptive Note:

Technical Report,15 Jun 2016,14 Dec 2017

Corporate Author:

University of New South Wales NSW Australia

Report Date:

2018-04-09

Pagination or Media Count:

21.0

Abstract:

The PI final report describes the development of a Doppler-Free velocimetry technique for use in low-density plasmas and hypersonic facility flows. In the report, the PI describes implementation of a novel Doppler-Free spectroscopy setup that uses a retroreflected counter propagating beam that is separated from the incoming beam by polarization. The PI has also developed a plasma cell within a convergingdiverging nozzle to provide a calibrated argon plasma with a known flow velocity. The system has been assembled and tested in a static rubidium cell, and in flowing argon gas. The viability of seeding a hypersonic flow with a rubidium salt has also been tested. The PI has had good success under this grant and will present the work during the International Symposium on Rarefied Gas Dynamics in 2016.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE