Extensive Frequency Comb Velocity Modulation Spectroscopy Of Thf+ For Use In The Jila Electron Edm Experiment

Gresh, Dan

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https://hdl.handle.net/2142/51141 Copy

Description

Title

Extensive Frequency Comb Velocity Modulation Spectroscopy Of Thf+ For Use In The Jila Electron Edm Experiment

Author(s)

Gresh, Dan

Contributor(s)

• Cornell, Eric
• Ye, Jun
• Cossel, Kevin

Issue Date

2014-06-17

Keyword(s)

Mini-symposium: Beyond the Mass-to-Charge Ratio: Spectroscopic Probes of the Structures of Ions

Abstract

The metastable $^3\Delta_1$ state in trapped HfF$^+$ is being used for an ongoing measurement of the electron electric dipole moment (eEDM)\footnote{H. Loh, K. C. Cossel, M. C. Grau, K.-K. Ni, E. R. Meyer, J. L. Bohn, J. Ye, E. A. Cornell, Science 342, 1220 (2013).}. ThF$^+$, which has a larger effective electric field and a longer-lived $^3\Delta_1$ state, offers increased sensitivity for an eEDM measurement. Recently, the Heaven group has spectroscopically studied the low-lying states of ThF$^+$ \footnote{B. J. Barker, I. O. Antonov, M. C. Heaven, K. A. Peterson, J. Chem. Phys. 136, 104305 (2012).}. However, to date there is no detailed information available about technically-accessible laser transitions in the near-infrared region of the spectrum, which are necessary for state preparation and detection in an eEDM experiment. By applying the technique of frequency comb velocity modulation spectroscopy (VMS)\footnote{L. C. Sinclair, K. C. Cossel, T. Coffey, J. Ye, E. A. Cornell, PRL 107, 093002 (2011).} to ThF$^+$ we can acquire 150 cm$^{-1}$ of continuous, ion-sensitive spectra with 150 MHz resolution in 25 minutes. Here, we report on extensive broadband, high-resolution survey spectroscopy of ThF$^+$ in the near-IR where we have observed and accurately fit several rovibronic transitions. In addition, we have observed and characterized numerous rovibronic transitions from an unknown thoriated species of molecular ions.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/51141

DOI

https://doi.org/10.15278/isms.2014.TG15

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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