OU+(3PIU)[-XOG+(1SIGMAG+) TRANSITIONS IN ZN-2 EXCITED IN CROSSED MOLECULAR AND LASER-BEAMS

The Ouu)XOg+(1g+) excitation spectrum of Zn2 van der Waals molecules produced in a molecular beam employing free-jet supersonic expansion, crossed with a pulsed dye-laser beam, was studied using Ar as the carrier gas. A well-resolved structure arising from transitions between the vibrational levels of the lower and upper states was recorded at various carrier gas pressures. An analysis of the spectrum yielded the vibrational constants, bond strengths, and equilibrium internuclear separations of the molecule in the two electronic states. © 1990 The American Physical Society.