SECOND-ORDER HYPERFINE AND ZEEMAN CORRECTIONS FOR AN (sl) CONFIGURATION

The complete Zeeman and hyperfine (dipole, quadrupole, and octupole) matrices are given for an (sl) configuration in intermediate coupling. From these are derived the second-order corrections to the zero-field hyperfine intervals for an (sp) configuration. Corrections appropriate to the crossing of certain of the hyperfine Zeeman levels of an (sp) /sup 3/:/sub 1/ state for atoms with spin-1/2 and spin-3/2 nuclei are obtained. (auth)