Electron affinities of 1{ital s}{sup 2}2{ital s}2{ital p} {sup 3}{ital P}{sup {ital o}} and 1{ital s}{sup 2}2{ital p}{sup 2} {sup 3}{ital P} of beryllium
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States)
The energies of 1{ital s}{sup 2}2{ital s}2{ital p}{sup 2} {sup 4}{ital P} and 1{ital s}{sup 2}2{ital p}{sup 3} {sup 4}{ital S}{sup {ital o}} of the beryllium anion are calculated by the methods of full core plus correlation (FCPC) and restricted variation. The relativistic corrections are calculated with first-order perturbation theory. This is an application of FCPC to a five-electron atomic system. The energies obtained are much lower than previously expected. Combined with the most accurate theoretical and experimental data, the electron affinities of beryllium 1{ital s}{sup 2}2{ital s}2{ital p} {sup 3}{ital P}{sup {ital o}} and 1{ital s}{sup 2}2{ital p}{sup 2} {sup 3}{ital P} are predicted to be 289.1(10) and 295.0(7) meV, respectively. The former is considerably larger than the recent measurement of 261(10) meV. The transition wavelength of 1{ital s}{sup 2}2{ital s}2{ital p}{sup 2} {sup 4}{ital P}{minus}1{ital s}{sup 2}2{ital p}{sup 3} {sup 4}{ital S}{sup {ital o}} is predicted to be at 2653.70(68) A, compared to the experimental observation at 2653.01(9) A. The oscillator strength and the radiative lifetime are also calculated.
- OSTI ID:
- 83955
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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