l-changing electron impact cross sections for high Rydberg atoms with application to helium experiments |
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| Authors: | David R Herrick |
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| Institution: | Chemistry Department and Institute of Theoretical Science , University of Oregon , Eugene, Oregon, 97403, U.S.A. |
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| Abstract: | The impact parameter method is applied to high Rydberg atoms for estimating Δn=0 dipole transition cross sections. Values for high-l states are determined in large part by polarization and relativistic fine-structure contributions to energy levels. Computed cross sections for low-l helium atoms show good agreement with angular momentum transfer cross sections from electron impact experiments over the range 20<n<80. |
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