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  Triple Coincidence (e,γ2e) Experiment for Simultaneous Electron Impact Ionization Excitation of Helium

Sakhelashvili, G., Dorn, A., Höhr, C., Ullrich, J., Kheifets, A. S., Lower, J., et al. (2005). Triple Coincidence (e,γ2e) Experiment for Simultaneous Electron Impact Ionization Excitation of Helium. Physical Review Letters, 95(3): 033201, pp. 1-4. Retrieved from http://link.aps.org/abstract/PRL/v95/e033201.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-8891-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-8892-3
Genre: Journal Article

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 Creators:
Sakhelashvili, G.1, Author           
Dorn, A.2, Author           
Höhr, C.2, Author           
Ullrich, J.2, Author           
Kheifets, A. S.3, Author
Lower, J.3, Author
Bartschat, K.3, Author
Affiliations:
1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              
2Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547              
3Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311, USA, ou_persistent22              

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Free keywords: 34.80.Dp, 34.80.Pa
 Abstract: Simultaneous ionization and excitation of helium atoms by 500 eV electron impact is observed by a triple coincidence of an ionized slow electron, the recoiling He+ ion, and the radiated vacuum ultraviolet photon (lambda<=30.4 nm). Kinematically complete differential cross sections are presented for the He+(2p)2P final ionic state, demonstrating the feasibility of a quantum mechanically complete experiment. The experimental data are compared to predictions from state-of-the-art numerical calculations. For large momentum transfers, a first-order treatment of the projectile-target interaction can reproduce the experimental angular dependence, but a second-order treatment is required to obtain consistent magnitudes.

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Language(s): eng - English
 Dates: 2005-07-14
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 268762
URI: http://link.aps.org/abstract/PRL/v95/e033201
 Degree: -

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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 95 (3) Sequence Number: 033201 Start / End Page: 1 - 4 Identifier: -