Doppler-Free Velocimetry in Hypersonic Flow
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 converging/diverging 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 09, 2018
- Accession Number
- AD1057088
Entities
People
- Sean O'byrne
- Suzanne Sheehe
- Tremayne Kaseman
Organizations
- University of New South Wales