Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MO: Fachverband Molekülphysik
MO 19: MO Poster 4
MO 19.6: Poster
Donnerstag, 12. März 2020, 17:00–19:00, Empore Lichthof
Photoelectron spectroscopy of size-selected metal clusters at FLASH 2 — •Fabian Bär1, Norman Iwe2, Kariman Elshimi1, Klara Raspe2, Simon Dold1, Franklin Martinez2, Josef Tiggesbäumker2, Karl-Heinz Meiwes-Broer2, and Bernd von Issendorff1 — 1Fakultät für Physik, Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany — 2Institut für Physik, Universität Rostock, Albert-Einstein-Str. 23-24, 18059 Rostock, Germany
A newly designed XUV magnetic bottle photoelectron spectrometer (MBPES) has been tested at the free electron laser FLASH2 in Hamburg in combination with a cluster source and two time-of-flight spectrometers in order to address the core levels of metal clusters. The high photon energy of 47 eV with decent bandwidth allowed us to investigate the 5d levels of lead and the 4d band of silver clusters with a unique resolution and short measurement time. In this high intensity regime, multiphoton absorption and therefore up to five different charge states have been observed. The results provide a rather comprehensive characterization of the size dependence of the valence and shallow core states density of lead cluster anions in the size range from n=3 to n=50 and silver cluster anions in the size range from n=8 to n=70.