Visible and ultraviolet laser spectroscopy of ThF
Name
1901.06084.pdf
Description
Submitted version
Size
931.9 KB
Format
Adobe PDF
Checksum (MD5)
bbbe27591ee026735fe56466e2c1ba8e
Author(s)
Zhou, Yan
Ng, Kia Boon
Cheng, Lan
Gresh, Daniel N.
Field, Robert W
Ye, Jun
Cornell, Eric A.
Date Issued
April 2019
Journal
Journal of Molecular Spectroscopy
Publisher
Elsevier BV
Citation
Zhou, Yan et al. "Visible and ultraviolet laser spectroscopy of ThF." Journal of Molecular Spectroscopy 358 (April 2019): 1-16 © 2019 Elsevier Inc
Version
Original manuscript
Abstract
The molecular ion ThF + is the species to be used in the next generation of search for the electron's Electric Dipole Moment (eEDM) at JILA. The measurement requires creating molecular ions in the eEDM sensitive state, the rovibronic ground state 3Δ 1 ,v + =0,J + =1. Survey spectroscopy of neutral ThF is required to identify an appropriate intermediate state for a Resonance Enhanced Multi-Photon Ionization (REMPI) scheme that will create ions in the required state. We perform broadband survey spectroscopy (from 13,000 to 44,000 cm −1 ) of ThF using both Laser Induced Fluorescence (LIF) and 1+1 ′ REMPI spectroscopy. We observe and assign 345 previously unreported vibronic bands of ThF. We demonstrate 30% efficiency in the production of ThF + ions in the eEDM sensitive state using the Ω=3/2 [32.85] intermediate state. In addition, we propose a method to increase the aforementioned efficiency to ∼100% by using vibrational autoionization via core-nonpenetrating Rydberg states, and discuss theoretical and experimental challenges. Finally, we also report 83 vibronic bands of an impurity species, ThO.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.jms.2019.02.006
