We report on the commissioning of a fast electron-energy scan system for measurements of electron-impact ionization cross sections. The Giessen crossed-beams experiment employs a high-power electron gun which has been developed over recent years and which permits wide variations of the beam parameters. A multi-electrode design enables the decoupling of the electron energy from the electron density. The newly implemented control system, which governs the various electrode potentials, is described together with the salient technical features.
@article{arxiv.2603.09393,
title = {Commissioning of a fast fine-step electron-energy-scan system for electron-ion crossed-beams experiments},
author = {B. Michel Döhring and Alexander Borovik and Kurt Huber and Alfred Müller and Stefan Schippers},
journal= {arXiv preprint arXiv:2603.09393},
year = {2026}
}
Comments
21 pages (including literature), 14 pages of text, 11 figures