Fourier absorption spectra of Carbon monoxide

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SUMMARY

The discussion focuses on interpreting the Fourier absorption spectra of Carbon monoxide (CO), emphasizing the relationship between vibrational and rotational factors. Key findings include the identification of rotational angular momentum changes, specifically delta l values of -1, 0, and +1, which correspond to shifts in rotational states (delta v = ±1). The user seeks to understand how these shifts relate to molecular radius variations with energy. Tools and resources for further exploration were also requested.

PREREQUISITES
  • Understanding of Fourier transform spectroscopy
  • Knowledge of molecular vibrational and rotational states
  • Familiarity with angular momentum in quantum mechanics
  • Basic principles of spectroscopy and energy transitions
NEXT STEPS
  • Research "Fourier transform spectroscopy techniques" for detailed methodologies
  • Study "quantum mechanics of rotational states" to deepen understanding of angular momentum
  • Explore "vibrational spectroscopy of diatomic molecules" for insights on vibrational factors
  • Investigate "energy level diagrams for CO" to visualize molecular energy transitions
USEFUL FOR

Chemists, physicists, and researchers in spectroscopy, particularly those focusing on molecular absorption spectra and energy transitions in diatomic molecules like Carbon monoxide.

goGP
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So I have a spectra of CO that I need to interpret. My guess is that the spectra will depend on the vibrational and vibrational factors but how could I see that?
I mean what will that come out like in the Fourier spectra?
any tips on this our a site where I can read more about it is appriciated.

/ goGP
 
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ok when looking around I have found some answers. found a picture of what we are looking at.

so basically what I know now is that we have
delta l = -1
to the left of the gap and
delta l = +1
to the right
and
delta l = 0 where the gap is

where l is the rotational angular momenta.

I also know that the peaks corresponds to a shift in both v and l value where v is the rotationalstate. with the rule that
delta v= +(-)1

so what I want with this now is to maybe see how the radius of the molecule differ with energy but I'm not really sure how to start.
 

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