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Approach to the calculation of the important many-body effects on photoabsorption oscillator strengths

โœ Scribed by Cleanthes A. Nicolaides; Donald R. Beck

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
759 KB
Volume
36
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

By a combination of .rclection rules for dipo!e transitions ZUKI notions From vutitionperturbntion theory, we develop a fEst+,rdcr theory of oscillator strengths (FOTOS) whereby the important correlations for an accurate treatment of electric dipole processes in atoms and molecules can be easily understood, formally derived and calculated. FOTOS is applied here to certain one-and two-clcctron transitions in Li I, N I and N II. The calculation of the corresponding oscillator strengths present considerable theoretical problems. Our results resolve the existing discrepancy between lifetime espcriments and previous many-body calculations.

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โœ Cleanthes A. Nicolaides; Donald R. Beck ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 799 KB

The problem of deciding whWt of three equivalent forms of ekcrric dipok transition probabZ!ities is tl?e most "proper" or "accurate" to us-e, has been discussed in secant prtpe,s from vzuious potits of view. Here we examine this question and also cer!in conditions which haye to be saWied far the thr