Measurement of single moving particle temperatures with an FT-IR spectrometer

Sønnik Clausen, L.H. Sørensen

    Research output: Contribution to journalJournal articleResearch


    A conventional scanning FT-IR spectrometer is used to measure the blackbody radiation through a rapidly moving pinhole in an experiment simulating a dying hot particle. The effects and errors from source movements are analyzed and verified through experiments. The importance of the scanning velocity, phase-correction method, and temperature variations during scanning is investigated. It is shown that a calibration of the system at one temperature is sufficient for accurate spectral radiance and temperature measurements throughout a broad temperature range. The temperature errors are reduced by a factor of 2-10 compared with results from a typical two-color pyrometer. A novel method is presented for measuring emission spectra from single moving particles passing the field of view of the spectrometer in a random manner.
    Original languageEnglish
    JournalApplied Spectroscopy
    Issue number9
    Pages (from-to)1103-1111
    Publication statusPublished - 1996

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