Journal of Physics B: Atomic, Molecular and Optical Physics
A relationship between certain integrals of the product of two Laguerre polynomials is obtained. It is shown how this relationship, together with two known Hankel transforms, allows for an alternative derivation of some relations between matrix elements of r k for hydrogenic ions. A further relation, involving matrix elements of logarithmic functions, is obtained in a similar manner. © 1990 IOP Publishing Ltd.
Swainson, R. A. and Drake, Gordon W. F.. (1990). An alternative proof of some relations between hydrogenic matrix elements. Journal of Physics B: Atomic, Molecular and Optical Physics, 23 (7), 1079-1084.