title: Experimental study of the asymmetric charge transfer reaction between Ar+ ions and Fe atoms.
abstract: We investigate the Ar(+)-Fe asymmetric charge transfer (ACT) reaction using a combination of plasma diagnostics methods and a kinetic model of the afterglow plasma, which allow monitoring of the temporal evolution of the densities of different species. The iron vapor is created inside a discharge cell by cathode sputtering; its density is measured by atomic absorption spectroscopy. The rate coefficient of the reaction is evaluated from the emission intensity decay of Fe(+)∗ lines pumped by the ACT process in the He-Ar-Fe and Ar-Fe afterglow plasmas. The measurements yield a rate coefficient k = 7.6( ± 3.0) × 10(-9) cm(3) s(-1) at T = 300 K.
authors.affiliation: Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, H-1525 Budapest, POB 49, Hungary. Ihor.Korolov@gmail.com
authors.forename: I
authors.initials: I
authors.lastname: Korolov
authors.forename: G
authors.initials: G
authors.lastname: Bánó
authors.forename: Z
authors.initials: Z
authors.lastname: Donkó
authors.forename: A
authors.initials: A
authors.lastname: Derzsi
authors.forename: P
authors.initials: P
authors.lastname: Hartmann
mesh_terms: D001128:Argon / Q000737:chemistry*; D006371:Helium / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D013054:Spectrophotometry, Atomic; D014618:Vacuum
chemical_list: D007477:Ions; D006371:Helium; D001128:Argon; D007501:Iron