Stuttgart 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MO: Fachverband Molekülphysik
MO 5: Experimental Techniques
MO 5.4: Vortrag
Montag, 12. März 2012, 17:15–17:30, V38.02
Design of a new pixel type position sensitive anode for ion and electron spectroscopy — •Andre Meissner1, Gregor Hartmann1, Toralf Lischke1, Uwe Becker1,3, Burkhard Langer2, and Omar Al-Dossary3 — 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany — 2Freie Universität Berlin, Berlin, Germany — 3King Saud University, Rhiyad , Saudi Arabia
Position sensitive anodes are the key element for all photoionization and particle impact ionization experiments which provide full information on the momentum distribution of the fragmenting system, either ions or electrons. Famous examples for such experiments are the measurements performed by the COLTRIMS method. Similar systems have been developed also by other groups. One of the key problem in these experiments, particularly for larger target systems is the so called multi-hit capability. Delay line anodes and pixel based anodes show a capacity in this sense of 10 to 20. In order to improve this capacity we have developed a system for the pixel type arangement. This should allow us to increase the multi-hit capability up to 100. In this case it could be used for many fragmentation events of larger molecules but also for multi electron emission events being probed in coincidence. The basic design of this type of anode will be presented and its possible applications are discussed.