MEASUREMENTS OF HYPERFINE CONSTANTS IN CA+

We have measured the hyperfine constants A(2S1/2), A(2P1/2), and A(2P3/2) for Ca+. We compare our results with the calculations of Mårtensson- Pendrill and Salomonson [Phys. Rev. A 30, 712 (1984)], who used many-body perturbation theory (MBPT). The agreement between our results and MBPT calculations for Ca+ is about 3%, which is comparable to similar comparisons reported for Cs [S. Blundell, in 2 Relativistic, Quantum Electrodynamic, and Weak Interaction Effects in Atoms, AIP Conf. Proc. No. 189, edited by Walter Johnson, Peter Mohr, and Joseph Sucher (AIP, New York, 1988)]. © 1990 The American Physical Society.