2013/10/31 by S. B. Cahn, J. Ammon, E. Kirilov +6 · 1 citation
Physics and Astronomy · #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.112.163002
This version is updated in response to referee's comments, and includes a more substantive conclusion than the original version
arxiv created 2014/03/11 · arxiv updated 2015/06/17
Rotational levels of molecular free radicals can be tuned to degeneracy using laboratory-scale magnetic fields. Because of their intrinsically narrow width, these level crossings of opposite-parity states have been proposed for use in the study of parity-violating interactions and other applications. We experimentally study a typical manifestation of this system using 138BaF. Using a Stark-mixing method for detection, we demonstrate level-crossing signals with spectral width as small as 6 kHz. We use our data to verify the predicted lineshapes, transition dipole moments, and Stark shifts, and to precisely determine molecular magnetic g-factors. Our results constitute an initial proof-of-concept for use of this system to study nuclear spin-dependent parity violating effects.