Autoionization dynamics of He nanodroplets resonantly excited by intense XUV laser pulses

Abstract: The ionization dynamics of helium droplets irradiated by intense, femtosecond extreme ultraviolet (XUV) pulses is investigated in detail by photoelectron spectroscopy. Helium droplets are resonantly excited to atomic-like 2p states with a photon energy of 21.5 eV and autoionize by interatomic Coulombic decay (ICD). A complex evolution of the electron spectra as a function of droplet size (250 to 106 He atoms per droplet) and XUV intensity (109–1012 Wcm−2) is observed, ranging from narrow atomic-like peaks that are due to binary autoionization, to an unstructured feature characteristic of electron emission from a nanoplasma. The experimental results are analyzed and interpreted with the help of a numerical simulation based on rate equations taking into account all relevant processes—multi-step ionization, electronic relaxation, ICD, secondary inelastic collisions, desorption of electronically excited atoms, and collective autoionization (CAI)

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch
• Notes: New journal of physics. - 22 (2020) , 083043, ISSN: 1367-2630

Contributors, Places and Time

• Event: Veröffentlichung
• (where): Freiburg
• (who): Universität
• (when): 2020
• Creator: Ovcharenko, Yevheniy ; LaForge, Aaron ; Langbehn, Bruno ; Plekan, Oksana ; Cucini, Riccardo ; Finetti, Paola ; O’Keeffe, Patrick ; Iablonskyi, Denys ; Nishiyama, Toshiyuki ; Ueda, Kenji ; Piseri, Paolo ; DiFraia, Michele ; Richter, R. ; Coreno, Marcello ; Callegari, Carlo ; Prince, Kevin C. ; Stienkemeier, Frank ; Möller, Thomas ; Mudrich, Marcel
• Contributor: Molekül- und Nanophysik

Further information

• DOI: 10.1088/1367-2630/ab9554
• URN: urn:nbn:de:bsz:25-freidok-1726909
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 25.03.2025, 1:46 PM CET