Laser-Microwave Spectroscopy of Li+ Ions
The Li+ ion, a two-electron system like He is of fundamental interest as a testing ground for atomic structure theory. This paper reports on combined laser-microwave measurements of hyperfine structure (hfs) splittings of the metastable (τ ≈ 50 sec) ls2s 3S1 state in 6,7Li+ and of the short-lived (τ ≈ 43 nsec) ls2p 3P multiplet in 7Li+. The precise data from this experiment should stimulate improved ab initio calculations of the 2 3S1 hfs not available yet. It is also an aim of this experiment to test the very precise theoretical hfs  and fine structure  values existing for the 2 3P states. For very accurate 2 3P fine structure measurements in 4He see .
KeywordsHyperfine Structure Anomalous Magnetic Moment Nuclear Quadrupole Moment Reflection High Order Microwave Reflection
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