Abstract
Ni 2 + ions generated in a pulsed high-temperature plasma and cooled by supersonic expansion are photodissociated with tunable visible laser radiation. Resonant bound-bound absorption in the isolated ion is detected by the observation of Ni 2 + → Ni + + Ni sequential two-photon dissociation. Progressions of vibronic bands with partially resolved rotational structure belonging to several distinct electronic transitions in Ni 2 + have been observed in the interval between 16250 and 23500 cm −1. The appearance and preliminary analysis of this resonant two-photon dissociation (R2PD) spectrum will be discussed.
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