Near-infrared LIF spectroscopy of HfF

Abstract

The molecular ion HfF${}^{+}$ is the chosen species for a JILA experiment to measure the electron electric dipole moment (eEDM). Detailed knowledge of the spectrum of HfF is crucial to prepare HfF${}^{+}$ in a state suitable for performing an eEDM measurement\cite{Leanhardt}. We investigated the near-infrared electronic spectrum of HfF using laser-induced fluorescence (LIF) of a supersonic molecular beam. We discovered eight unreported bands, and assign each of them unambiguously, four to vibrational bands belonging to the transition $[13.8]0.5\leftarrow X1.5$, and four to vibrational bands belonging to the transition $[14.2]1.5\leftarrow X1.5$. Additionally, we report an improved measurement of vibrational spacing of the ground state, as well as anharmonicity ${\omega }_e{x}_e$.

5 pages, 5 figures, 2 tables

References in corpus (3)

• Candidate molecular ions for an electron electric dipole moment experiment
• Frequency Comb Velocity-Modulation Spectroscopy
• Laser-induced fluorescence studies of HfF+ produced by autoionization

Cited by in corpus (4)

• Search for the electron electric dipole moment using $\Omega$-doublet levels in PbO${}^{\ast }$
• Broadband velocity modulation spectroscopy of HfF^+: towards a measurement of the electron electric dipole moment
• Broadband velocity modulation spectroscopy of ThF${}^{+}$ for use in a measurement of the electron electric dipole moment
• REMPI Spectroscopy of HfF