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Title: Momentum imaging of dissociative electron attachment to N 2O at the 2.3-eV shape resonance

Authors:
; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1104302
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 88; Journal Issue: 1; Related Information: CHORUS Timestamp: 2017-04-06 12:35:19; Journal ID: ISSN 1050-2947
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Moradmand, A., Landers, A. L., and Fogle, M.. Momentum imaging of dissociative electron attachment to N2O at the 2.3-eV shape resonance. United States: N. p., 2013. Web. doi:10.1103/PhysRevA.88.012713.
Moradmand, A., Landers, A. L., & Fogle, M.. Momentum imaging of dissociative electron attachment to N2O at the 2.3-eV shape resonance. United States. doi:10.1103/PhysRevA.88.012713.
Moradmand, A., Landers, A. L., and Fogle, M.. Wed . "Momentum imaging of dissociative electron attachment to N2O at the 2.3-eV shape resonance". United States. doi:10.1103/PhysRevA.88.012713.
@article{osti_1104302,
title = {Momentum imaging of dissociative electron attachment to N2O at the 2.3-eV shape resonance},
author = {Moradmand, A. and Landers, A. L. and Fogle, M.},
abstractNote = {},
doi = {10.1103/PhysRevA.88.012713},
journal = {Physical Review. A},
number = 1,
volume = 88,
place = {United States},
year = {Wed Jul 24 00:00:00 EDT 2013},
month = {Wed Jul 24 00:00:00 EDT 2013}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevA.88.012713

Citation Metrics:
Cited by: 3works
Citation information provided by
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  • 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 DEAmore » 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)].« less
  • Electron attachment was studied in gaseous dinitrogen pentoxide, N{sub 2}O{sub 5}, for incident electron energies between a few meV and 10 eV. No stable parent anion N{sub 2}O{sub 5}{sup -} was observed but several anionic fragments (NO{sub 3}{sup -}, NO{sub 2}{sup -}, NO{sup -}, O{sup -}, and O{sub 2}{sup -}) were detected using quadrupole mass spectrometry. Many of these dissociative pathways were found to be coupled and provide detailed information on the dynamics of N{sub 2}O{sub 5} fragmentation. Estimates of the cross sections for production of each of the anionic fragments were made and suggest that electron attachment to N{submore » 2}O{sub 5} is amongst the most efficient attachment reactions recorded for nonhalogenated polyatomic systems.« less
  • Photolytic generation of methanol from methane in Ar matrices containing Li and N{sub 2}O is proposed to occur via a UV-light-induced electron transfer from Li to N{sub 2}O to form N{sub 2}O{sup -}. A weak ground-state interaction between Li and N{sub 2}O is suggested by the observation of a Li-N{sub 2}O complex which decays rapidly during the initial stages of the reaction. N{sub 2}O{sup -} is believed to decompose spontaneously or, following photo-excitation, to form N{sub 2} and O{sup -}. The O{sup -} thus formed, or O({sup 1}D) produced via photodetachment from O{sup -}, then reacts with methane to formmore » methanol. An electron is believed to be transferred to a nearby Li{sup +} ion in the process, thereby regenerating the initial electron donor and allowing significant amounts of N{sub 2}O to be consumed, despite the limited amount of Li available in the matrix. Formation of the formaldehyde/water complex during the latter stages of the reaction occurs as a result of secondary reactions of methanol with O{sup -} or O({sup 1}D). The wavelength cutoff of 350-400 nm for the process is in reasonable accord with the predicted threshold for formation of a Li{sup +}/N{sub 2}O{sup -} ion pair in an Ar matrix. The unusual dependence of the rate of methanol production, in irradiation time, with N{sub 2}O concentration in the matrix is interpreted as arising from a reversible, redundant electron transfer from Li to N{sub 2}O. 28 refs., 9 figs.« less