Probing scattering wave functions close to the nucleus

Recently, three-dimensional imaging of the ejected electrons following 100 MeV/amu C6+ single ionization of helium led to the observation of a new structure not predicted by theory [Nature (London) 422, 48 (2003)]]. Instead of the usual "recoil lobe" centered on the momentum-transfer axis,...

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Bibliographic Details
Published in:Physical review letters 2003-12, Vol.91 (25), p.253201-253201, Article 253201
Main Authors: Madison, D H, Fischer, D, Foster, M, Schulz, M, Moshammer, R, Jones, S, Ullrich, J
Format: Article
Language:English
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Summary:Recently, three-dimensional imaging of the ejected electrons following 100 MeV/amu C6+ single ionization of helium led to the observation of a new structure not predicted by theory [Nature (London) 422, 48 (2003)]]. Instead of the usual "recoil lobe" centered on the momentum-transfer axis, a ring-shaped structure centered on the beam axis was observed. New measurements at 2 MeV/amu exhibit a similar structure, which is now predicted by theory. We argue that the same theory failed at 100 MeV/amu because the faster projectiles probe distances much closer to the nucleus, where our multiple-scattering model is expected to break down.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.91.253201