Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 10: Highly charged ions and their applications
A 10.1: Vortrag
Montag, 11. März 2019, 16:15–16:30, S HS 3 Physik
Commissioning of a High-Power Electron-Gun for Electron-Ion Crossed-Beams Experiments — •B. Michel Döhring1,2, Alexander Borovik Jr1, Benjamin Ebinger1,2, Kurt Huber1, Tobias Molkentin1, Alfred Müller1, and Stefan Schippers1 — 1Justus-Liebig-Universität Gießen — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)
Reliable atomic data for electron impact ionisation of ions are required for a thorough understanding and modelling of plasmas. This affects a wide range of research fields such as, e. g. astrophysics, space propulsion, EUV-lithography, and fusion research. Recently, a new electron gun has been integrated into the Gießen crossed-beams experiment which permits to extend the measurements to much higher electron energies than before. This electron gun provides a ribbon-shaped electron beam with energies ranging from 10 to 3500 eV [1,2,3]. For a high flexibility, we can choose between different operation modes. Here, we present the latest achievements in the commissioning of this gun as well as new cross-section measurements for multiply charged xenon ions.
[1] W. Shi et al., NIMB 205 (2003) 201-206.
[2] A. Borovik Jr. et al., J. Phys.: Conf. Ser. 488 (2014) 142007.
[3] B. Ebinger et al., NIMB 408 (2017) 317-322.