Low energy (0-4 eV) electron impact to N{sub 2}O clusters: Dissociative electron attachment, ion-molecule reactions, and vibrational Feshbach resonances

Journal Article · Thu Oct 21 00:00:00 EDT 2010 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.3505143· OSTI ID:21559935

Vizcaino, Violaine; Denifl, Stephan; Maerk, Tilmann D; Scheier, Paul ^[1]; Illenberger, Eugen ^[2]

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1. Institut fuer Ionenphysik und Angewandte Physik, Leopold Franzens-Universitaet Innsbruck, Technikerstrasse 25, A-6020 Innsbruck (Austria)
2. Institut fuer Chemie und Biochemie-Physikalische und Theoretische Chemie, Freie Universitaet Berlin, Takustrasse 3, D-14195 Berlin (Germany)

Electron attachment to clusters of N{sub 2}O in the energy range of 0-4 eV yields the ionic complexes [(N{sub 2}O){sub n}O]{sup -}, [(N{sub 2}O){sub n}NO]{sup -}, and (N{sub 2}O){sub n}{sup -} . The shape of the ion yields of the three homologous series differs substantially reflecting the different formation mechanisms. While the generation of [(N{sub 2}O){sub n}O]{sup -} can be assigned to dissociative electron attachment (DEA) of an individual N{sub 2}O molecule in the target cluster, the formation of [(N{sub 2}O){sub n}NO]{sup -} is interpreted via a sequence of ion molecule reactions involving the formation of O{sup -} via DEA in the first step. The nondecomposed complexes (N{sub 2}O){sub n}{sup -} are preferentially formed at very low energies (below 0.5 eV) as a result of intramolecular stabilization of a diffuse molecular anion at low energy. The ion yields of [(N{sub 2}O){sub n}O]{sup -} and (N{sub 2}O){sub n}{sup -} versus electron energy show sharp peaks at the threshold region, which can be assigned to vibrational Feshbach resonances mediated by the diffuse anion state as already observed in an ultrahigh resolution electron attachment study of N{sub 2}O clusters [E. Leber, S. Barsotti, J. Boemmels, J. M. Weber, I. I. Fabrikant, M.-W. Ruf, and H. Hotop, Chem. Phys. Lett. 325, 345 (2000)].

• OSTI ID: 21559935
• Journal Information: Journal of Chemical Physics, Vol. 133, Issue 15; Other Information: DOI: 10.1063/1.3505143; (c) 2010 American Institute of Physics; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANIONS
COMPLEXES
DISSOCIATION
ELECTRON ATTACHMENT
ELECTRONS
EV RANGE
ION-MOLECULE COLLISIONS
MOLECULAR CLUSTERS
MOLECULES
NITROUS OXIDE
PEAKS
RESOLUTION
RESONANCE
SHAPE
STABILIZATION
VIBRATIONAL STATES
YIELDS
CHALCOGENIDES
CHARGED PARTICLES
COLLISIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FERMIONS
ION COLLISIONS
IONS
LEPTONS
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS