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Creators/Authors contains: "Rodrigues, Neil S"

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  1. ; ; (, AIAA)
    Free, publicly-accessible full text available January 12, 2027
  2. ; ; ; (, HiSST 2025)
    Free, publicly-accessible full text available September 22, 2026
  3. ; ; ; (, American Institute of Aeronautics and Astronautics)
    A hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps CARS) system was developed for quantitative measurements of temperature in a laboratory-scale supersonic jet facility. Measurements were recorded at low pressures and densities relevant for supersonic and hypersonic environments, with special interest in exploring the feasibility of deploying this technique in the 20-inch Mach 6 and 31-inch Mach 10 wind tunnels located at NASA Langley Research Center. Modifications to the existing supersonic jet facility were made to simulate a test section with a width of 31 inches, so that the size of the test section is relevant for either wind tunnel. The CARS system was designed such that a similar beam geometry can be used in the laboratory to acquire point-based fs/ps CARS measurements along two axes of translation. Rotational Raman transitions of O2 and N2 were targeted. 
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