Angular distribution of electrons elastically scattered from gases: 2--400 eV on He. I

Journal Article · Mon Sep 01 04:00:00 EDT 1980 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.22.916· OSTI ID:5190277

Shyn, T W

The angular distribution of electrons elastically scattered from He has been measured by electron impact utilizing a crossed-beam method. The energy and angular range measured were from 2.0 to 400 eV and from -96/sup 0/ to +156/sup 0/, respectively. The present results have been normalized to LaBahn and Callaway's theoretical value at 10.0 eV. The present results agree, in general, with a few previous measurements; however, there are still discrepancies in a detailed shape and magnitude among the measurements. The various theories need more improvements, especially for the backward scattering. It is found that the Born approximation is not yet adequate at 400-eV incident energy.

• Research Organization: Space Physics Research Laboratory, The University of Michigan, Ann Arbor, Michigan 48109
• OSTI ID: 5190277
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 22:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
COLLISIONS
CRYOGENIC FLUIDS
DISTRIBUTION
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 01-10
EV RANGE 10-100
EV RANGE 100-1000
FLUIDS
HELIUM
NONMETALS
RARE GASES
SCATTERING