A study of inelastic electron scattering in He covering the complete angular range from 0 degrees to 180 degrees

Authors
Cubric, D Mercer, DJL Channing, JM King, GC Read, FH
Citation
D. Cubric et al., A study of inelastic electron scattering in He covering the complete angular range from 0 degrees to 180 degrees, J PHYS B, 32(3), 1999, pp. L45-L50
Citations number
10
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN journal
09534075 → ACNP
Volume
32
Issue
3
Year of publication
1999
Pages
L45 - L50
Database
ISI
SICI code
0953-4075(19990214)32:3<L45:ASOIES>2.0.ZU;2-P
Abstract
Differential cross sections for electron impact excitation of the first fou r excited states of helium have been measured for electron impact energies of 30, 40 and 50 eV. A novel 'magnetic angle-changing' technique has been u sed which allows the full angular range from 0 degrees to 180 degrees to be covered for the first time. Serious discrepancies between theory and exper iment have been found at angles that were previously inaccessible experimen tally.