2018 BFY III Abstract Detail Page
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||W50: Radio-Frequency Spectroscopy by Optical Pumping
||This experiment uses TeachSpin's Optical Pumping apparatus to illustrate one method for performing spectroscopy among the ground-state sublevels of an atom. It illustrates the new issues that arise in doing spectroscopy among energy levels that are equally populated in equilibrium, and uses a clever optical method for establishing non-equilibrium populations in ground-state sub-levels. It further uses the absorption of light, rather than of radio-frequency energy, to detect the transitions. The Zeeman effect, of magnetic fields on the levels' energy, can be detected with remarkable precision.
David Van Baak