Benchmark differential cross sections for electron impact excitation of the n = 2 states in helium at near-ionization-threshold energies

Benchmark differential cross sections for electron impact excitation of the n = 2 states in helium at near-ionization-threshold energies

In this paper, we present new normalized experimental differential cross sections for electron impact excitation of the n = 2 states in helium. The incident electrons have energies in the range 23.5-35 eV, while the scattered electrons are detected over the angular range 10-130. Corresponding theore...

Full description

Bibliographic Details
Main Authors: Hoshina, M., Kato, H., Tanaka, H., Bray, Igor, Fursa, Dmitry, Buckman, S., Ingolfsson, O., Brunger, M.
Format: Journal Article
Published: IOP Publishing Ltd 2009
Online Access:http://hdl.handle.net/20.500.11937/20244
Description
Summary:In this paper, we present new normalized experimental differential cross sections for electron impact excitation of the n = 2 states in helium. The incident electrons have energies in the range 23.5-35 eV, while the scattered electrons are detected over the angular range 10-130. Corresponding theoretical results from our convergent close-coupling approach are also presented and in general are in very good accord with our measured data. Where possible, a comparison of the present experimental and theoretical results with those from previous measurements is also made. The case for the n = 2 levels in helium constituting a benchmark cross section data set is examined.

Similar Items