A Perturbation Calculation of Properties of the Helium Iso-Electronic Sequence
β Scribed by Dalgarno, A.; Stewart, A. L.
- Book ID
- 120144934
- Publisher
- The Royal Society
- Year
- 1958
- Tongue
- English
- Weight
- 725 KB
- Volume
- 247
- Category
- Article
- ISSN
- 0962-8444
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π SIMILAR VOLUMES
A comparison is presented for the ground state of the helium atom of high order Rayleigh-Schri)dinger perturbation theories based upon a hydrogenic. a screened hydrogenic, a Hartree and a modified Hartree local zero-order hamiltonian. The hydrogenic zero-order schemes are superior tc the Hartree zer
## Abstract The ^2^__S__ ground state of lithium isoβelectronic sequence is calculated by the use of Hylleraasβtype wave functions. A 92 term oneβspin wave function was used for lithium atom calculations. The energy obtained was β7.478031 a.u. as compared with the previous best value of β7.478025 a