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Importance of Thomas single-electron transfer in fast p-He collisions
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
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2010 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 81, no 1, 12714- p.Article in journal (Refereed) Published
Abstract [en]

We report experimental angular differential cross sections for nonradiative single-electron capture in p-He collisions (p + He -> H + He+) with a separate peak at the 0.47 mrad Thomas scattering angle for energies in the 1.3-12.5 MeV range. We find that the intensity of this peak scales with the projectile velocity as v(P)(-11). This constitutes the first experimental test of the prediction from 1927 by L. H. Thomas [Proc. R. Soc. 114, 561 (1927)]. At our highest energy, the peak at the Thomas angle contributes with 13.5% to the total integrated nonradiative single-electron capture cross section.

Place, publisher, year, edition, pages
2010. Vol. 81, no 1, 12714- p.
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Natural Sciences
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URN: urn:nbn:se:su:diva-49677DOI: 10.1103/PhysRevA.81.012714ISI: 000277958100023OAI: oai:DiVA.org:su-49677DiVA: diva2:379558
Note
authorCount :12Available from: 2010-12-17 Created: 2010-12-17 Last updated: 2017-12-11Bibliographically approved

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Gudmundsson, MagnusBerenyi, ZoltanHaag, NicoleJohansson, Henrik A. B.Misra, DeepankarReinhed, PeterSimonsson, AnsgarCederquist, HenrikSchmidt, H. T.
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Department of PhysicsThe Manne Siegbahn Laboratory
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