Energy states, oscillator strengths and polarizabilities of many
electron atoms confined by an impenetrable spherical cavity
Abstract
Abstract: The orbital, ground and excited state energies of many
electron atoms confined by an impenetrable spherical cavity with radius
R are calculated using Quantum Genetic Algorithm (QGA) approach and
Hartree-Fock Roothaan (HFR) theory. The important properties such as
static and dynamic polarizability, oscillator strength and static
pressure are investigated as perturbative. The results reveal that
cavity radius and impurity charge have played an important role on the
polarizability, the oscillator strength and pressure of the system. In
addition, it is seen that when cavity radius is extremely large, all
energies and the other physical parameters approach the energies and
physical parameters of unconfined atom. As the dot radius decreases, the
polarizability of system because of the strong spatial confinement
decreases, but the pressure exerting on the system as the cavity radius
R is shrunk increases. In addition, as the impurity charge increases,
the magnitude of the oscillator strength decreases. Keywords: Orbital
energy, static and dynamic polarizability, oscillator strength,
pressure, many electron quantum dots.