title: Resonant laser ablation as a selective metal ion source for gas-phase ion molecule reactions.
abstract: Resonant laser ablation (RLA) is used as a source to selectively generate multiple metal ion species from the same sample. The capability of rapidly changing metal ions for gas-phase ion chemistry studies is a significant advantage in ion-molecule chemistry. The simple experimental arrangement uses relatively modest laser pulse energies (≤ 25 µJ/pulse) from a tunable dye laser to desorb and selectively ionize different metal atoms from a multicomponent sample. In turn, this allows the chemistry of several components to be investigated without breaking vacuum or altering the experimental geometry. This work demonstrates the use of RLA as a selective source of several reagent metal ions for gas-phase ion chemistry investigations. In particular, the reactivity of acetone with Cr(+), Fe(+), Ni(+), and Cu(+) was examined for metal ions selectively created by RLA from a standard steel sample.
authors.affiliation: Chemical Science and Technology Division, MS J565, Los Alamos National Laboratory, Los Alamos, New Mexico, USA.
authors.forename: C G
authors.initials: CG
authors.lastname: Gill
authors.forename: A W
authors.initials: AW
authors.lastname: Garrett
authors.forename: P H
authors.initials: PH
authors.lastname: Hemberger
authors.forename: N S
authors.initials: NS
authors.lastname: Nogar