A measurement of the electric dipole moment of the electron (eEDM) can constrain beyond-standard-model physics. Our group at JILA has measured the eEDM to a precision of 1.3e-28 e cm. While a second generation experiment with technological and measurement scheme improvements is underway, we are developing a third generation experiment aimed at increasing the sensitivity to the eEDM with several key improvements: (i) a new molecular ion species, ThF+, which has an eEDM-sensitive ground state and an effective electric field of 38 GV/cm, and (ii) a new trap structure allowing for continuous measurement. The first step in designing this experiment is understanding the energy structure of our molecule. In this talk we discuss recent ThF+ spectroscopic results and their implications on the upcoming third generation measurement.
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
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