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  Novel method for state selective determination of electron-impact-excitation cross sections from 0° to 180°

Weyland, M., Ren, X., Pflüger, T., Baek, W. Y., Bartschat, K., Zatsarinny, O., et al. (2014). Novel method for state selective determination of electron-impact-excitation cross sections from 0° to 180°. EPJ - Technics and Instrumentation, 1(1): 6. doi:10.1140/epjti/s40485-014-0006-2.

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externe Referenz:
http://dx.doi.org/10.1140/epjti/s40485-014-0006-2 (Verlagsversion)
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open access
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Urheber

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 Urheber:
Weyland, Marvin1, Autor           
Ren, Xueguang1, Autor           
Pflüger, Thomas1, Autor           
Baek, Woon Yong, Autor
Bartschat, Klaus, Autor
Zatsarinny, Oleg, Autor
Fursa, Dmitry V, Autor
Bray, Igor, Autor
Rabus, Hans, Autor
Dorn, Alexander1, Autor           
Affiliations:
1Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society, ou_2025284              

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Schlagwörter: -
 Zusammenfassung: 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.

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Sprache(n): eng - English
 Datum: 2014-08-07
 Publikationsstatus: Erschienen
 Seiten: 13 Pages
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1140/epjti/s40485-014-0006-2
 Art des Abschluß: -

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Titel: EPJ - Technics and Instrumentation
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Springer
Seiten: - Band / Heft: 1 (1) Artikelnummer: 6 Start- / Endseite: - Identifikator: -