IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Accurate and simple wavefunctions for the helium isoelectronic sequence with correct cusp conditions
Autor/es:
K.V. RODRIGUEZ, G. GASANEO, D.M. MITNIK
Revista:
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Editorial:
IOP
Referencias:
Lugar: Bristol, London; Año: 2006
ISSN:
0953-4075
Resumen:
Simple and accurate wavefunctions for the He atom and He-like
isoelectronic ions are presented.
These functions -- the product of hydrogenic one-electron
solutions and a fully-correlated part -- satisfy all the
coalescence cusp conditions at the Coulomb singularities.
Functions with different number of parameters and different
degrees of accuracy are discussed.
Simple analytic expressions for the wavefunction and the energy,
valid for a wide range of nuclear charges, are presented.