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Introduction

The atomic hyperfine splitting is determined by the hyperfine interaction constant ${A_J}$ and ${B_J}$. In strong external magnetic fields, the splitting is also affected by the off-diagonal hyperfine constants ${A_{J,J-1}, B_{J,J-1}, B_{J,J-2}}$. The hyperfine program computes the magnetic dipole and electric quadrupole constants from MCHF wave functions. The program requires that the orbitals of a single configuration from the initial and final state to be mutually orthogonal.



2001-10-11