Worksheet: Spectral Line Widths
In this worksheet, we will practice measuring the full-width-half-maximum of a spectral line and determining the effect of noise and background profile.
Why are the peaks in a UV-Vis spectrum broad?
- AElectronic transitions occur slowly with respect to the instrumental time scale.
- BThe detectors cannot differentiate specific wavelengths, but rather give a range of possible wavelengths.
- CThey represent a Boltzman distribution, where some molecules become excited before others.
- DThe vibrational and rotational transitions are superimposed upon the electronic transitions.