Measurement of Isotope Shift in Optical Transitions of Atomic Oxygen
The possibility of performing high resolution laser spectroscopy of atomic oxygen was demonstrated only very recently . The atom was produced by dissociation of O2 molecules in a moderate power radiofrequency discharge, substained by a buffer noble gas (Ne or Ar). A discussion of the collisional processes governing the production of O excited atoms can be found in . The difficulty of working with O2 and O in only trace amounts was overcome by the use of a very sensitive optogalvanic detection scheme, while sub-Doppler resolution of fine structures was obtained using intermodulated spectroscopy configuration.
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