2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/91801An elementary treatment of the Dirac equation in the presence of a three dimensional spherically symmetric delta potential is presented. We show how to calculate the cross section using the relativistic wave expansion method for a one delta potential and two concentric delta potentials. We compare our results with the cross section calculated in the Born approximation.14 pages, 4 figuresQuantum PhysicsHigh Energy Physics - Phenomenologytext