Time-resolved gas thermometry by laser-induced grating spectroscopy with a high-repetition rate laser system
作者： Felix J. Förster , Cyril Crua , Martin Davy , Paul Ewart
DOI: 10.1007/S00348-017-2370-6
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摘要: Thermometry using laser-induced grating spectroscopy (LIGS) is reported a high-repetition rate laser system, extending the technique to allow time-resolved measurements of gas dynamics. LIGS signals were generated second harmonic output at 532 nm commercially available Nd:YAG with nitrogen dioxide as molecular seed. Measurements rates up 10 kHz demonstrated under static cell conditions. Transient temperature changes same contained in subjected rapid compression by injection recorded 1 kHz derive evolution compressed showing 50 K on time-scale 0.1 s measurement precision 1.4%. The data showed good agreement an analytical thermodynamic model process.
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