A new method is proposed for calculating the widths of atomic and molecular resonances. The method uses only square-integrable functions to approximate the nonresonant scattering solutions and employs Stieltjes-moment-theory techniques to extract a continuous approximation for Gamma (E) from a discrete representation of the background continuum. The method has been applied to several well known resonances in He, He - and Mg - with encouraging results. The proposed method is easily applied to molecular problems.
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A. U. Hazi (1978) studied this question.
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