Study of a confined Hydrogen-like atom by the Asymptotic Iteration   Method
  The asymptotic iteration method (AIM) is used to obtain both special exact solutions and general approximate solutions for a Hydrogen-like atom confined in a spherical box of arbitrary radius R. Critical box radii, at which states are no longer bound, are also calculated. The results are compared with those in the literature. 
Hakan Ciftci, Richard L. Hall, and Nasser Saad