State-selected ion photodissociation

Abstract

Using the optical optical double resonance (O.O.D.R.) technique, Na₂ molecules in a supersonic beam are ionized in well defined v J levels of the Na₂ ⁺ X ²∑ _u ⁺ ground state. These ions are then laser photodissociated as a function of the previously prepared vibrational level. As a result, we determine the potential curve of the first Na₂ ^{+ 2}Π _u state. Dipole moment transition and photodissociation cross-sections are also calculated.