The hydrogen atom perturbed by a constant 1-dimensional weak quadratic potential \(\lambda z^2\) is solved at first-order perturbation theory using the eigenstates of the total angular momentum ...operator - the coupled basis. Physical applications of this result could be found, for example, in the study of a quadratic Zeeman effect weaker than fine-structure effects, or in a perturbation caused by instantaneous generalised van der Waals interactions.
An implementation of atomic form factors Santamarina Rı́os, Cibrán; Saborido Silva, Juan José
Computer physics communications,
03/2003, Volume:
151, Issue:
1
Journal Article
Peer reviewed
A FORTRAN implementation of hydrogen-like discrete–discrete atomic form factors is presented. The definition of atomic form factors and their applicability to the calculation of atomic cross sections ...is briefly discussed. An explicit analytical expression for the discrete–discrete atomic form factors is presented exactly in the way they are implemented in the program. Finally, a description of the program itself and how to use it is given, together with some useful examples and their outputs.
