Absolute double differential ionization cross-section for electron impact: He |
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Authors: | L. Avaldi R. Camilloni E. Fainelli G. Stefani |
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Affiliation: | (1) Istituto di Metodologie Avanzate Inorganiche del C.N.R., Area della Ricerca di Roma, C P 10, 00016 Monterotondo, Italia |
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Abstract: | Summary A complete set of absolute double differential cross-section (DDCS) for electron impact ionization of helium has been measured at an incident energyE 0=500 eV. The angular distributions of the ejected and scattered electrons between 40 and 435.5 eV have been measured over the angular range of (10÷145)o. This work supplements the mapping of DDCS for ejected electron energies close to (E 0−IP)/2 (IP is the He 1s ionization energy), a region where the experimental data are fragmentary. The possibility of representing the full Bethe surface with a simple functional form is investigated. To speed up publication, the authors of this paper have agreed to not receive the proofs for correction. |
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Keywords: | Electron scattering |
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