title: Thermal effects on energetics and dynamics in water cluster anions (H2O)n(-).
abstract: The electron binding energies and relaxation dynamics of water cluster anions (H(2)O)(n)(-) (11 ≤ n ≤ 80) formed in co-expansions with neon were investigated using one-photon and time-resolved photoelectron imaging. Unlike previous experiments with argon, water cluster anions exhibit only one isomer class, the tightly bound isomer I with approximately the same binding energy as clusters formed in argon. This result, along with a decrease in the internal conversion lifetime of excited (H(2)O)(n)(-) (25 ≤ n ≤ 40), indicates that clusters are vibrationally warmer when formed in neon. Over the ranges studied, the vertical detachment energies and lifetimes appear to converge to previously reported values.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA.
authors.forename: Ryan M
authors.initials: RM
authors.lastname: Young
authors.forename: Margaret A
authors.initials: MA
authors.lastname: Yandell
authors.forename: Sarah B
authors.initials: SB
authors.lastname: King
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Neumark