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A: Fachverband Atomphysik

A 14: Posters: Interaction of matter with ions

A 14.15: Poster

Dienstag, 11. März 2008, 16:30–18:30, Poster C3

One- and Two-Electron ECC-Processes in 90 AMeV U88+ + N2 collisions — Muaffaq Nofal^1,2,3, •Siegbert Hagmann^2,3, Thomas Stöhlker^2,4, Doris Jakubassa-Amundsen⁵, and Christophor Kozhuharov² — ¹Max Planck Inst. f Kernphysik, Heidelberg — ²GSI, Darmstadt — ³Inst. f. Kernphysik, Univ. Frankfurt — ⁴Physikal. Institut, Univ. Heidelberg — ⁵Mathemat. Inst., LMU München

Theories for electron transfer to the continuum have encountered considerable difficulties to take into account the intrinsic many-electron processes in the capture channel. This may partially be attributed to large momentum transfers involved and thus collision systems are mostly not in the realm of first order perturbation theories. For this reason we have studied the non-radiative electron capture to continuum (ECC) in the relativistic domain where one or two active electrons are involved. Using the imaging forward electron spectrometer in the ESR target zone we have studied simultaneously both, 1-and 2-electron ECC, and report first results.