Chinese Physics B, Volume. 29, Issue 9, (2020)
Effects of temperature and pressure on OH laser-induced fluorescence exciting A–X (1,0) transition at high pressures
Fig. 1. Temperature dependence of Boltzmann fraction for different rotational levels in the state X2
Fig. 2. Typical laser spectrum and absorption spectra of line
Fig. 3. (a) Calculated overlaps of
Fig. 4. Temporal profiles of the simulated fluorescence for CH4/air flame: (a) at different pressures of 1 bar, 10 bar, 20 bar, 30 bar, and constant temperature of 1500 K; (b) at different temperatures of 1000 K, 1500 K, 2000 K, 2300 K, and constant pressure of 10 bar. The laser profile is also shown and marked with solid downward triangles in the figure. The amplitudes of the laser pulse are individually set according to the scales of
Fig. 5. (a) Relative fluorescence yields as a function of pressure at different temperatures. (b) Relative fluorescence yields as a function of temperature at different pressures. Note the logarithmic scale in sub-figure (b).
Fig. 6. OH fluorescence signal as a function of pressure for the
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Xiaobo Tu, Linsen Wang, Xinhua Qi, Bo Yan, Jinhe Mu, Shuang Chen. Effects of temperature and pressure on OH laser-induced fluorescence exciting A–X (1,0) transition at high pressures[J]. Chinese Physics B, 2020, 29(9):
Received: Apr. 23, 2020
Accepted: --
Published Online: Apr. 29, 2021
The Author Email: Chen Shuang (chenshuang827@gamil.com)