( A 1) ( A 2) ( B ) ( C 1) ( C 2) ( D ) ( E 1) ( E 2) ( F ) FIG. 1: Feynman diagrams representing the screened self-energy correction in the presence of an external magnetic field. The wavy line indicates the photon propagato r and the double line indicates the electron propagators in the Coulomb field. The dashed line terminatedwith the triangle denotes the interaction with the magnetic field. [60] I. Angeli, At. Data Nucl. Data Tables 87 , 185 (2004). [61] N. J. Stone, At. Data Nucl. Data Tables 90 , 75 (2005). 23