Abstract
An expression for the reduced width of an auto-ionizing level was derived using the R-matrix theory. The electron emission widths were calculated as a function of channel radius. By choosing an appropriate value of channel radius it was found that the electron emission width is 5.885 x 10/sup -3/ ev for an outgoing p electron of kinetic energy 1.162 ev. This width is about 3000 times larger than the partial radiation width of the level. It is shown that certain selection rules cause some of the partial widths to vanish. Thus measurements can provide very useful information about the type of coupling. The electronic radial wave functions were obtained by a self-consistent-field calculation. The calculation also showed that the penetrability is not too sensitive to the change in atomic electrical polarizability and the core radius. (auth)
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