Atoms confined in a penetrable potential: effect of the atom position on the electric and magnetic responses

D. S. ACOSTA CODEN; S. S. GOMEZ; R. H. ROMERO

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS

IOP PUBLISHING LTD

Año: 2011 vol. 44 p. 35003 - 35003

0953-4075

We report results of the calculation of polarizability and the nuclear magnetic shielding tensorsof two-electron atoms confined within an attractive Gaussian potential well. The electric andmagnetic responses are obtained within the random phase approximation (RPA) of thepolarization propagator. The influence of the depth and range of the potential on the electronicstructure is also studied. The dependence of the parallel (along the displacement) andperpendicular components of the polarizability and shielding tensors on the distance of theatom to the centre of the well is calculated and rationalized as a dissociation-type process ofthe artificial diatomic molecule formed between the Coulomb and the well potentials.