Photodissociation Dynamics in (N₂)_<i>n</i>⁺ Clusters.

ABSTRACT: (N₂)_n⁺ cluster ions are produced and cooled in a pulsed-discharge supersonic expansion and studied with UV laser photodissociation and velocity-map imaging (VMI). All cluster sizes up to n = 15 absorb strongly near 355 nm, and those with n > 3 dissociate to produce both N₂⁺ and N₄⁺ photofragments. This suggests that the N₄⁺ ion is the chromophore in the larger clusters, consistent with the previous optical spectroscopy and bond energy determinations. Photofragment imaging of N₄⁺ produces an anisotropic distribution peaked along the laser polarization. Analysis of the maximum kinetic energy release produces a dissociation energy consistent with values

SUBMITTER: Blais JRC 

PROVIDER: S-EPMC12516711 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature