Low energy (e,2e) measurements of CH4 and neon in the perpendicular plane.

Citation data:

The Journal of chemical physics, ISSN: 1089-7690, Vol: 136, Issue: 9, Page: 094302

Publication Year:
2012
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Citations 25
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Repository URL:
http://scholarsmine.mst.edu/phys_facwork/1538
PMID:
22401435
DOI:
10.1063/1.3690461
Author(s):
Nixon, Kate L.; Murray, Andrew James; Chaluvadi, Hari; Amami, Sadek; Madison, Don H.; Ning, Chuangang
Publisher(s):
AIP Publishing; American Institute of Physics (AIP)
Tags:
Physics and Astronomy; Chemistry; Atomic orbital; Cross section; Distorted wave Born approximation; Electron energies; Experimental data; Highest occupied molecular orbital; Low energies; Molecular targets; Perpendicular-plane; Scattering mechanisms; Symmetric kinematics; Target orientation; Theoretical prediction; Triple differential cross sections; Atomic physics; Experiments; Methane; Quantum chemistry; Neon; Atomic orbital; Cross section; Distorted wave Born approximation; Electron energies; Experimental data; Highest occupied molecular orbital; Low energies; Molecular targets; Perpendicular-plane; Scattering mechanisms; Symmetric kinematics; Target orientation; Theoretical prediction; Triple differential cross sections; Atomic physics; Experiments; Methane; Quantum chemistry; Neon; Physics
article description
Low energy experimental and theoretical triple differential cross sections for the highest occupied molecular orbital of methane (1t(2)) and for the 2p atomic orbital of neon are presented and compared. These targets are iso-electronic, each containing 10 electrons and the chosen orbital within each target has p-electron character. Observation of the differences and similarities of the cross sections for these two species hence gives insight into the different scattering mechanisms occurring for atomic and molecular targets. The experiments used perpendicular, symmetric kinematics with outgoing electron energies between 1.5 eV and 30 eV for CH(4) and 2.5 eV and 25 eV for neon. The experimental data from these targets are compared with theoretical predictions using a distorted-wave Born approximation. Reasonably good agreement is seen between the experiment and theory for neon while mixed results are observed for CH(4). This is most likely due to approximations of the target orientation made within the model.