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Smoke and Mirrors: Ultra-Rapid-Scan FT-IR Spectrometry

Each of these spectra was transformed from a single 6 ms scan. The source is not very bright and it is fluctuating substantially. In spite of the low signal and the potentially strong multiplicative noise source, it appears that the noise level is independent of the signal. The emission bands of hot CO2 can be clearly seen at 2300 and 700 cm-1 in the later spectra.

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