Characterization of the outer well of NaH C1Σ+ state by fluorescence depletion spectroscopy

Abstract The outer well of the NaH C 1 Σ + excited state was determined using pulsed optical–optical double resonance fluorescence depletion spectroscopy. The level-selected fluorescence of the A 1 Σ + state is depleted back to the ground state when a probe laser excites the molecules to the C 1 Σ + state. A total of 456 rovibrational levels, v  = 5–33 and J  = 1–11, were observed. A set of Dunham constants and the Rydberg–Klein–Rees (RKR) potential curve for the outer well were reported.