Hannover 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MS: Fachverband Massenspektrometrie
MS 5: Posters I
MS 5.6: Poster
Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof
Laser-induced delayed electron emission of small copper cluster anions — •Christian Breitenfeldt1,2, Klaus Blaum2, Sebastian George2, Jürgen Göck2, Jonas Karthein2, Michael Lange2, Sebastian Menk2, Christian Meyer2, Lutz Schweikhard1, and Andreas Wolf2 — 1Institut für Physik, Ernst-Moritz-Arndt Universität, Felix-Hausdorff-Str. 6, 17487 Greifswald, Germany — 2Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
The Cryogenic Trap for Fast ion beams (CTF) is an electrostatic ion beam trap located at the Max-Planck-Institute for nuclear physics in Heidelberg and designed to investigate fundamental properties of charged particles in the gas phase. Here it is employed to study thermionic and laser-induced electron emission of cluster anions with complex multi-body structure. In recent measurements the cooling of small copper cluster anions was investigated both at room temperature as well as under cryogenic conditions of about 15 K. The cluster ions were produced in a caesium sputter ion source, known to produce poly-atomic ions in highly excited ro-vibrational states. For probing the evolution of the internal energy as a function of the storage time the clusters have been irradiated with nanosecond laser pulses at 1064 nm, and the delayed electron emission has been recorded. Results for copper clusters with cluster sizes ranging from 4 to 7 will be presented.