Absolute cross sections for dissociative electron attachment and dissociative ionization of cobalt tricarbonyl nitrosyl in the energy range from 0 eV to 140 eV
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Date
2013-01-24
Authors
Engmann, Sarah
Stano, Michal
Papp, Peter
Brunger, Michael James
Matejcik, Stefan
Ingolfsson, Oddur
Journal Title
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Publisher
American Institute of Physics
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Abstract
We report absolute dissociative electron attachment (DEA) and dissociative ionization (DI) cross sections
for electron scattering from the focused electron beam induced deposition (FEBID) precursor
Co(CO)3NO in the incident electron energy range from 0 to 140 eV. We find that DEA leads mainly to
single carbonyl loss with a maximum cross section of 4.1 × 10−16 cm2, while fragmentation through
DI results mainly in the formation of the bare metal cation Co+ with a maximum cross section close
to 4.6 × 10−16 cm2 at 70 eV. Though DEA proceeds in a narrow incident electron energy range,
this energy range is found to overlap significantly with the expected energy distribution of secondary
electrons (SEs) produced in FEBID. The DI process, on the other hand, is operative over a much
wider energy range, but the overlap with the expected SE energy distribution, though significant, is
found to be mainly in the threshold region of the individual DI processes.
Description
Keywords
Physics, Electron impact ionisation, Organic compounds, Dissociation
Citation
Engmann, S., Stano, M., Papp, P., Brunger, M.J., Matejcik, S. and Ingolfsson, O., 2013. Absolute cross sections for dissociative electron attachment and dissociative ionization of cobalt tricarbonyl nitrosyl in the energy range from 0 eV to 140 eV. Journal of Chemical Physics, 138, 044305.