IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Ground states wavefunctions for two--electron systems
with finite nuclear mass
Autor/es:
K.V. RODRIGUEZ, V.Y. GONZALEZ, L.U. ANCARANI, D.M. MITNIK, AND G. GASANEO
Lugar:
Graz, Austria
Reunión:
Conferencia; 40th European Group for Atomic Systems (EGAS) conference; 2008
Institución organizadora:
EGAS
Resumen:
The basis functions proposed by Gasaneo and Ancarani
are used to construct trial wavefunctions for several
two-electron systems.
The focus here is on the study of the following negatively
charged hydrogenlike ions : H, D, T and M, the negative
positronium ion Ps, and some exotic systems (nme)+ in which
one of the particles is heavier than the other two.
All these systems are similar to each other in the main
property of their spectra, i.e. they have only one bound
(ground), singlet state with angular momentum L = 0.
The basis functions satisfy exactly all the two-body Kato
cusp conditions.
We also investigate systems of the form (nme)+ where (nme)+
refers to exotic particles with masses m3 equal n times the
mass of the positron but with the charge of the positron (+).
We have obtained approximate analytical
expressions for the energies and some mean radial quantities,
as functions of the mass of the heaviest particle m3.
Results of the mean energy and other radial quantities
will be shown at the conference for the different ions and
exotic systems.