Regensburg 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MI: Fachverband Mikrosonden
MI 7: Ion Beam Methods
MI 7.4: Vortrag
Mittwoch, 13. März 2013, 12:00–12:15, H5
A position sensitive germanium detector for the measurement of angular deviation of positron-electron annihilation radiation — •Benjamin Löwe1, Markus Reiner2, Werner Egger1, Christoph Hugenschmidt2, and Günther Dollinger1 — 1Universität der Bundeswehr, LRT2, Werner-Heisenberg-Weg 39, 85577 Neubiberg, Germany — 2FRM II, Technische Universität München, Lichtenbergstraße 1, 85747 Garching, Germany
To improve electron momentum sensitivity in Coincidence Doppler Broadening Spectroscopy (CDBS) measurements it is envisaged to measure the angular correlation of annihilation radiation along with the energy of both annihilation photons. For this purpose two position sensitive 36-fold pixelated, planar germanium detectors will be utilized. The position sensitivity of one of those detectors has been tested with a collimated gamma source. A data acquisition system consisting of 37 sampling analogue-to-digital converters with PC based on-line/off-line processing has been installed. A position sensitivity of 1.6 mm has been be achieved.