Measurements of total scattering cross sections for low-energy positrons and electrons colliding with krypton and xenon

Journal Article · Sat Nov 01 04:00:00 EST 1980 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.22.1872· OSTI ID:6847900

Dababneh, M S; Kauppila, W E; Downing, J P; Laperriere, F; Pol, V; Smart, J H; Stein, T S

Total scattering cross sections have been measured in the same apparatus for positrons and electrons of well-defined energies (0.35--100 eV) colliding with krypton and xenon using a beam-transmission technique. The positron total cross sections are largest at the lowest energies studied, and decrease in a manner very similar to the elastic scattering cross-section calculations by Schrader and by McEachran et al. The total cross sections for positron-krypton, xenon collisions experience abrupt changes in their slope at the respective positronium-formation thresholds indicating that positronium formation may be an important contributor to the total cross section above the formation threshold. The present electron measurements are in good agreement with the recent measurements of Wagenaar. Estimates of potential errors in the present measurements due to incomplete discrimination against small-angle forward elastic scattering are made.

• Research Organization: Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48202
• OSTI ID: 6847900
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 22:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DATA
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
KRYPTON
NONMETALS
NUMERICAL DATA
POSITRON COLLISIONS
POSITRON-ATOM COLLISIONS
POSITRONIUM
RARE GASES
SCATTERING
TOTAL CROSS SECTIONS
XENON