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Title:Toward rotational state-selective photoionization of THF+ ions
Author(s):Zhou, Yan
Contributor(s):Ye, Jun; Cornell, Eric; Ni, Yiqi; Grau, Matt; Cairncross, William; Gresh, Dan; Ng, Kia Boon
Subject(s):Fundamental physics
Abstract:ThF$^{+}$ has been chosen to replace HfF$^{+}$ for a second-generation measurement of the electric dipole moment of the electron (eEDM). Compared to the currently running HfF$^{+}$ eEDM experiment, ThF$^{+}$ has several advantages: (i) the eEDM-sensitive state ($^{3}\Delta_{1}$) is the ground state, which facilitates a long coherence time [1]
(ii) its effective electric field (35 GV/cm) is 50\% larger than that of HfF$^{+}$, which promises a direct increase of the eEDM sensitivity [2]
and (iii) the ionization energy of neutral ThF is lower than its dissociation energy, which introduces greater flexibility in rotational state-selective photoionization via core-nonpenetrating Rydberg states [3]. In this talk, we first present our strategy of preparing and utilizing core-nonpenetrating Rydberg states for rotational state-selective ionization. Then, we report spectroscopic data of laser-induced fluorescence of neutral ThF, which provides critical information for multi-photon ionization spectroscopy. [1] D. N. Gresh, K. C. Cossel, Y. Zhou, J. Ye, E. A. Cornell, Journal of Molecular Spectroscopy, 319 (2016), 1-9 [2] M. Denis, M. S. Nørby, H. J. A. Jensen, A. S. P. Gomes, M. K. Nayak, S. Knecht, T. Fleig, New Journal of Physics, 17 (2015) 043005. [3] Z. J. Jakubek, R. W. Field, Journal of Molecular Spectroscopy 205 (2001) 197–220.
Issue Date:2016-06-24
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Rights Information:Copyright 2016 by the authors
Date Available in IDEALS:2017-01-26

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