The $C{}^1{\Sigma }^{+}$, $A{}^1{\Sigma }^{+}$, and $b{}^3{\Pi }_{0^{+}}$ states of LiRb

Abstract

We present the first spectroscopic studies of the $C{}^1{\Sigma }^{+}$ electronic state and the $A{}^1{\Sigma }^{+}$ - $b{}^3{\Pi }_{0^{+}}$ complex in ${}^7$Li - ${}^{85}$Rb. Using resonantly-enhanced, two-photon ionization, we observed $v=7$, 9, 12, 13 and $26-44$ of the $C{}^1{\Sigma }^{+}$ state. We augment the REMPI data with a form of depletion spectra in regions of dense spectral lines. The $A{}^1{\Sigma }^{+}$ - $b{}^3{\Pi }_{0^{+}}$ complex was observed with depletion spectroscopy, depleting to vibrational levels $v=0\to 29$ of the $A{}^1{\Sigma }^{+}$ state and $v=8\to 18$ of the $b{}^3{\Pi }_{0^{+}}$ state. For all three series, we determine the term energy and vibrational constants. Finally, we outline several possible future projects based on the data presented here.

References in corpus (2)

• Formation of ultracold ${}^7$Li${}^{85}$Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy
• Formation of deeply bound ultracold LiRb molecules via photoassociation near the Li 2S${}_{1/2}$ + Rb 5P${}_{3/2}$ asymptote

Cited by in corpus (1)

• Genetics-based deperturbation analysis for the spin-orbit coupled ${\mathrm{A}}^1{\Sigma }^{+}$ and ${\mathrm{b}}^3{\Pi }_{0^{+}}$ states of LiRb