Toward rotational state-selective photoionization of THF+ ions

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https://hdl.handle.net/2142/91476

Author(s)

Zhou, Yan

Contributor(s)

Issue Date

2016-06-24

Keyword(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.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

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http://hdl.handle.net/2142/91476

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