Zeeman-tuned rotational level-crossing spectroscopy in a diatomic free radical
Abstract
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 BaF. 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.
Keywords
Cite
@article{arxiv.1310.6450,
title = {Zeeman-tuned rotational level-crossing spectroscopy in a diatomic free radical},
author = {S. B. Cahn and J. Ammon and E. Kirilov and Y. V. Gurevich and D. Murphree and R. Paolino and D. A. Rahmlow and M. G. Kozlov and D. DeMille},
journal= {arXiv preprint arXiv:1310.6450},
year = {2015}
}
Comments
This version is updated in response to referee's comments, and includes a more substantive conclusion than the original version