Details

Autor(en) / Beteiligte

• Wilson, C.L.
• Montgomery, H.E.
• Sen, K.D.
• Thompson, D.C.

Titel

Electron correlation energy in confined two-electron systems

Ist Teil von

• Physics letters. A, 2010-09, Vol.374 (43), p.4415-4419

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Radial, angular and total correlation energies are calculated for four two-electron systems with atomic numbers Z = 0 – 3 confined within an impenetrable sphere of radius R. We report accurate results for the non-relativistic, restricted Hartree–Fock and radial limit energies over a range of confinement radii from 0.05 – 10 a 0 . At small R, the correlation energies approach limiting values that are independent of Z while at intermediate R, systems with Z ⩾ 1 exhibit a characteristic maximum in the correlation energy resulting from an increase in the angular correlation energy which is offset by a decrease in the radial correlation energy.