Molecular emission spectra database

  • Thread starter rammer
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Hi, I am looking for online molecular emission spectra database for spectroscopic analysis of plasma. It would be great if searching in it is based on a wavelength of spectral lines/bands.

For atomic spectra I found this database: http://physics.nist.gov/PhysRefData/ASD/lines_form.html
But I couldn't find anything like that for molecular spectra which is essential for full analysis of spectra.

And my next question is (as I am beginner in spectra analysis) what is the right and most efficient way of analysing spectra? My current procedure is that I find a peak in my spectrum then I search appropriate atoms using the peak wavelength and then I match one atom (the one which has more characteristic lines in my spectrum) for the given peak wavelength. Is there more efficient way?
 

Answers and Replies

  • #2
TeethWhitener
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The NIST chemistry webbook has thermochemical and spectroscopic properties for a number of molecules: https://webbook.nist.gov/
My current procedure is that I find a peak in my spectrum then I search appropriate atoms using the peak wavelength and then I match one atom (the one which has more characteristic lines in my spectrum) for the given peak wavelength. Is there more efficient way?
This works fine for atomic absorption/emission, as well as x-ray photoelectron spectroscopy, but for molecular spectroscopy, trying to correlate spectral lines with individual atoms won't work. The spectral features in general are made up of collective motions of nuclei/electrons.
 

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