Measurements of positron-methane differential scattering cross sections

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.55.4244· OSTI ID:503685

Przybyla, D A; Kauppila, W E; Kwan, C K; Smith, S J; Stein, T S ^[1]

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1. Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48202 (United States)

Relative differential cross sections (DCS{close_quote}s) have been measured for 4 to 200 eV e{sup +}-CH{sub 4} quasielastic scattering (elastic scattering plus rotational and vibrational excitations) from 30{degree} to 135{degree} in a crossed-beam experiment. The observed DCS behavior, including diffraction effects at low energies, is very similar to that found earlier for e{sup +}-Ar elastic scattering. Comparisons between (e{sup +},e{sup {minus}})-(CH{sub 4},Ar) DCS measurements suggest that observed diffraction effects may be correlated with the sign of the net interaction potential and the degree of spherical symmetry of the target. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 503685
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 55; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
ELASTIC SCATTERING
EV RANGE 100-1000
EXCITATION
METHANE
ORGANIC COMPOUNDS
POSITRON-MOLECULE COLLISIONS
POSITRONS