Show simple item record

dc.contributor.authorWeyland, M.
dc.contributor.authorRen, X.
dc.contributor.authorPflüger, T.
dc.contributor.authorBaek, W.
dc.contributor.authorBartschat, K.
dc.contributor.authorZatsarinny, O.
dc.contributor.authorFursa, Dmitry
dc.contributor.authorBray, Igor
dc.contributor.authorRabus, H.
dc.contributor.authorDorn, A.
dc.identifier.citationWeyland, M. and Ren, X. and Pflüger, T. and Baek, W. and Bartschat, K. and Zatsarinny, O. and Fursa, D. et al. 2014. Novel method for state selective determination of electron-impact-excitation cross sections from 0° to 180°. EPJ Techniques and Instrumentation. 1 (6): pp. 1-13.

We use an improved target recoil momentum spectroscopy setup to determine differential cross sections for excited metastable state production in atoms and molecules by electron impact and show its capabilities for an atomic helium target. A crossed beam setup with a supersonic helium jet and a pulsed electron beam at energies close to the excitation threshold of 19.82 eV was used. Measuring the recoil momentum vector of the target instead of the momentum of the scattered electron removes common restrictions to the accessible scattering angles while the microchannel plate detector ensures a high counting efficiency. Using a photoemission electron source we reach an energy resolution of about 200 meV at 1 μA peak current. Results are compared with simulations using theoretical convergent-close-coupling (CCC), R-matrix with pseudo-states (RMPS) and B-spline R-matrix (BSR) calculations and show good agreement.

dc.publisherSpringer Berlin Heidelberg
dc.subjectInelastic scattering
dc.subjectElectron impact excitation
dc.titleNovel method for state selective determination of electron-impact-excitation cross sections from 0° to 180°
dc.typeJournal Article
dcterms.source.titleEPJ Techniques and Instrumentation

This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License Please refer to the licence to obtain terms for any further reuse or distribution of this work.

curtin.departmentDepartment of Physics and Astronomy
curtin.accessStatusOpen access

Files in this item


This item appears in the following Collection(s)

Show simple item record