Intensity-dependent near-threshold ionization of Kr in the vacuum-uv. (July 2019)

• Record Type: Journal Article
• Authors: Varvarezos, Lazaros; John T, Costello; Duesterer, Stefan; Bomme, Cedric; Erk, Benjamin; Hartmann, Gregor; Rompotis, Dimitrios; Manschwetus, Bastian; Savelyev, Evgeny; De Fanis, Alberto; Meyer, Michael; Mazza, Tommaso; Kabachnik, Nikolay; Johnsson, Per; Kazansky, Andrey; Kelly, Mossy
• Is Part Of: Journal of physics. Volume 1298(2019)
• Publication Date: 2019-07
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1289/1/012030
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: In this work, we present measurements of the intensity-dependent photoelectron spectrum of Kr irradiated by the FLASH FEL tuned to a photon energy of 25.8 eV. Intensity dependent photoelectron spectra were obtained with the aid of a Velocity Map Imaging (VMI) spectrometer. As the FEL photon energy is close to threshold, two photon sequential double ionization is favoured. The number of open channels is kept to a minimum and leading to a simple description of the process.