Spin-Exchange Cross Section for Electron Excitation of Na 3S 3P Determined by a Novel Spectroscopic Technique
Physical Review A
An experimental technique is described which enables determination of the partial cross sections for electron excitation of atoms as a function of changes in spin and orbital angular momentum. This method provides a good signal-to-noise ratio in the energy region near threshold, and could be used to study long- or short-lived excited states of many atomic systems. Measurements for Na 3S−3P, near-threshold excitation are reported here. The results are generally in good agreement with the close-coupling calculations of D. L. Moores and D. W. Norcross [J. Phys. B 5, 1482 (1972)] for the largest ΔmS and ΔmL components of the cross section, but not for the component with |ΔmS|=1 and |ΔmL|=1, indicating that the exchange interaction is larger than previously recognized.
This article was archived with permission from APS Physics, all rights reserved. Document also available from Physical Review A.
Han, Xianming; Schwinn, G. W.; and Gallagher, A., "Spin-Exchange Cross Section for Electron Excitation of Na 3S 3P Determined by a Novel Spectroscopic Technique" Physical Review A / (1988): -.
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