Knowledge Bank

Resonant two-photon ionization spectroscopy has been employed in the first spectroscopic investigation of diatomic $AlZn.1$ Several discrete transitions were recorded in the energy region from $18400cm-1$ to $19100cm-1$. Rotational and lifetime analyses of these transitions have identified two excited molecular states, the $A\Omega \prime =0.5$ and the $B2\Pi 1/2,3/2$ states, in addition to the ground $X2\Pi 1/2$ state. Collection of the spectrum under hotter source conditions reveals numerous additional spectroscopic features which can be attributed to vibrational or spin-orbit excited ground state molecules. The following constants are reported: $X2\Pi 1/2,3/2rv\prime \prime =2.6944A\dot{},\Delta G\prime \prime 1/2=154cm-1A\Omega \prime =0.5r2\prime =2.4836A\dot{}B2\Pi 1/2rϵ\prime =2.7599A\dot{},\omega ϵ\prime =195.4cm-1,\omega ϵ\prime xϵ\prime =0.8cm-1B2\Pi 3/2rϵ\prime =2.7295A\dot{},\omega ϵ\prime =210,4cm-1,\omega ϵ\prime Xϵ\prime =5.2cm-1.$