Experimental determination of ground-state correlation effects in molecular nitrogen
Physical Review A, ISSN: 1050-2947, Vol: 44, Issue: 11, Page: 7361-7378
1991
- 43Citations
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Article Description
High-energy (25-28-keV) electron-impact spectroscopy (HEEIS) has been used to measure a relatively complete Bethe surface for molecular nitrogen. This surface, placed on an absolute scale by Bethe-sum-rule normalization of the generalized oscillator strength (GOS), has been employed to obtain the x-ray incoherent scattering factor S(K) as a function of the momentum transfer K by use of a sum rule of the GOS. Ground-state correlation effects on S(K) were obtained by comparing the experimental results with theory based on a near-Hartree-Fock molecular wave function. The results are compared with recent theoretical calculations of valence-shell correlation effects. It is argued that x-ray and electron-scattering experiments offer the most sensitive tests currently available for valence-shell electron-correlation effects in the ground electronic states of molecules. The results obtained coupled with available theory suggest that correlation effects on the one-electron density play a dominant role in the determination of the total correlation energy of the nitrogen molecule. © 1991 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0001308845&origin=inward; http://dx.doi.org/10.1103/physreva.44.7361; http://www.ncbi.nlm.nih.gov/pubmed/9905878; https://link.aps.org/doi/10.1103/PhysRevA.44.7361; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevA.44.7361/fulltext; http://link.aps.org/article/10.1103/PhysRevA.44.7361
American Physical Society (APS)
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