Electron mobilities in low density hydrogen and carbon monoxide gases: Momentum transfer cross sections at very low energies

Journal Article · Sun Sep 15 04:00:00 EDT 1991 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.460775· OSTI ID:5312332

Ramanan, G; Freeman, G R ^[1]

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1. Chemistry Department, University of Alberta, Edmonton, T6G 2G2 (Canada)

Values of the momentum transfer cross sections {sigma}{sub {ital m}} of hydrogen and carbon monoxide molecules for very low energy electrons (1--300 meV, 0.2--50 zJ; z=zepto=10{sup {minus}21} ) have been refined by electron mobility measurements in the gases over wide ranges of temperature. This is part of an ongoing study of effects of molecular shape on electron transport in fluids. Electron mobilities in hydrogen gas at temperatures 17--450 K are roughly consistent with previously reported values of {sigma}{sub {ital m}}, but do not exclude the possibility of a {sigma}{sub {ital m}} minimum of 5.2{times}10{sup {minus}20} m{sup 2} at an electron energy {xi}{le}0.7 zJ. Carbon monoxide molecules have a minimum {sigma}{sub {ital m}} of 5.8{times}10{sup {minus}20} m{sup 2} at {xi}=5 zJ. A new treatment of low energy electron scattering by CO is needed.

• OSTI ID: 5312332
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 95:6; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON MOBILITY
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
HIGH TEMPERATURE
HYDROGEN
LINEAR MOMENTUM TRANSFER
LOW TEMPERATURE
MEDIUM TEMPERATURE
MEV RANGE
MOBILITY
MOLECULE COLLISIONS
MOMENTUM TRANSFER
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE MOBILITY
VERY LOW TEMPERATURE