Laser spectroscopy of SrH. Time-resolved measurements of the A2Π state

In the near-infrared and red wavelength region around 680–760 nm, the spectrum of the A 2Π−X2Σ transition of gaseous SrH appears. By applying laser spectroscopic methods, a time-resolved experiment has been performed on the low-lying A2Π state of strontium hdyride. No local influences on the A2Π state were found due to interactions with the low-lying A′2Π state, as in the case of the BaH molecule. The following zero-pressure lifetime was obtained for the SrH molecule: τ(A2Π12 (ν′ = 0)) = 33.8 ± 1.9 ns.