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Berlin 2014 – scientific programme

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A: Fachverband Atomphysik

A 46: Atomic collisions and ultracold plasmas

A 46.1: Talk

Thursday, March 20, 2014, 16:30–16:45, BEBEL E34

Electron spectroscopy at the high-energy endpoint of electron-nucleus bremsstrahlung — •Pierre-Michel Hillenbrand1,2, Siegbert Hagmann1,3, Dariusz Banas4, Carsten Brandau5,2, Reinhard Dörner3, Enrico De Filippo8, Alexandre Gumberidze5, Dalong Guo9,10, Doris Jakubassa-Amundsen11, Michael Lestinsky1, Yuri Litvinov1,12, Alfred Müller2, Hermann Rothard13, Stefan Schippers2, Uwe Spillmann1, Andrey Surzhykov6, Sergey Trotsenko1,6, Alexander Voitkiv14, Vladimir Yerokhin15, and Thomas Stöhlker1,6,71GSI Darmstadt — 2Univ. Giessen — 3Univ. Frankfurt — 4Univ. Kielce, Poland — 5Extreme Matter Institute Darmstadt — 6Helmholtz-Institut Jena — 7Univ. Jena — 8INFN Catania, Italy — 9IMP Lanzhou, China — 10Univ. Beijing, China — 11Univ. München — 12Univ. Heidelberg — 13CIRIL GANIL Caen, France — 14MPI-K Heidelberg — 15Petersburg State Univ., Russia

The high-energy endpoint of electron-nucleus bremsstrahlung has been studied in inverse kinematics: For collisions U88++N2→U88++[N2+]* + e + γ the energy distribution of electrons scattered under ϑelab=0 with vevproj was measured coincident with the bremsstrahlung photons emitted under various angles ϑγlab. The triple-differential cross sections provide a stringent test for the fully relativistic theory of electron-nucleus bremsstrahlung. Furthermore the studied process, also termed radiative electron capture to continuum RECC, was compared to the competing processes of non-radiative electron capture to continuum ECC and the electron loss to continuum ELC.

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