H{sup 0}+H{sub 2} and H{sup 0}+O{sub 2} collisions at low kilo-electron-volt energies

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.4015· OSTI ID:388275

Quintana, E J; Pollack, E ^[1]

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1. Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States)

Small-angle H{sup 0}+H{sub 2} and H{sup 0}+O{sub 2} collisions are studied at energies of 1.0, 2.0, and 3.0 keV. Time-of-flight techniques are used to identify the dominant direct scattering ({r_arrow}H{sup 0}) processes. The stripping ({r_arrow}H{sup +}) and electron capture ({r_arrow}H{sup {minus}}) channels are identified by electrostatic energy analysis. The probabilities and reduced differential cross sections for the dominant processes are determined as a function of {tau} (={ital E}{theta}), the reduced scattering angle. This is found to be a useful variable for plotting the probabilities and reduced cross sections for the processes studied, since the results at the different energies generally lie on common curves. The electronically inelastic processes are found to dominate the collision for {tau}{gt}0.2 keV deg in H+H{sub 2} and {tau}{gt}0.3 keV deg in H+O{sub 2}. The stripping process in H{sub 2} primarily results in H{sup +}+H{sub 2}({ital X})+{ital e}{sup {minus}} while the H{sup +}+O{sub 2}{sup {minus}} channel is found to dominate the small-angle stripping in O{sub 2}. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388275
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ATOM-MOLECULE COLLISIONS
CROSS SECTIONS
HYDROGEN
HYDROGEN MOLECULES
KEV RANGE 01-10
OXYGEN
OXYGEN MOLECULES
STRIPPING
TIME-OF-FLIGHT METHOD