Mainz 2017 – scientific programme

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A: Fachverband Atomphysik

A 9: Precision Spectroscopy II

A 9.2: Talk

Monday, March 6, 2017, 17:15–17:30, N 3

Precision spectroscopy of Ba⁺ isotopes in a Paul trap — •Nivedya Valappol, Elwin Dijck, Amita Mohanty, Klaus Jungmann, Lorenz Willmann, and Aswin Hofsteenge — Van Swinderen Institute, University of Groningen, The Netherlands

We perform precision spectroscopy on Ba⁺ ions and precisely determine the 6s²S_1/2 - 6p²P_1/2, 6p²P_1/2 - 5d²D_3/2, 6s²S_1/2 - 5d²D_5/2 transition frequencies. We have achieved more than 100 times improved values using single trapped ion and frequency comb and I₂ line locked laser system. We have reached 10⁻¹¹ relative accuracy, where these values test precisely the atomic wave functions. This is important input for a measurement of atomic parity violation in the alkaline earth atoms.