Interdisziplinäres Zentrum für Materialwissenschaften
  Publications [search]   
Offers for students
Interdisziplinäres Zentrum für Materialwissenschaften
Nanotechnikum Weinberg
Heinrich-Damerow-Str. 4,
D-06120 Halle, Germany
Phone: +49 345 55 28471
Telefax:+49 345 55 27390 e-mail:
[Papers] [Theses] [Reports] [Posters]

Maik Butterling, Wolfgang Anwand, Gerhard Brauer, Thomas E. Cowan, Andreas Hartmann, Marco Jungmann, Krasimir Kosev, Reinhard Krause-Rehberg, Arnold Krille, Ronald Schwengner, Andreas Wagner
Positron annihilation spectroscopy using high-energy photons
phys. stat. sol. (a) (2009),

The superconducting electron accelerator ELBE (Electron Linac with high Brilliance and low Emittance) at the Research Centre Dresden-Rossendorf (Germany) serves as a high-intensity bremsstrahlung photon-source delivering a pulsed beam (26 MHz) with very short bunches (< 5 ps). The photons are being converted into positrons by means of pair production inside the target material thus forming an intense positron source. The accelerator machine pulse is used as time reference allowing positron lifetime spectroscopy. We performed positron annihilation spectroscopy by pair production in different sample materials and used coincidence techniques to reduce the background due to scattered photons significantly in order resulting in spectra of extraordinary high quality.

Keywords: positron annihilation, instrumentation, beam, lifetime
© Wiley-VCH 2009

Impressum Copyright © Center of Materials Science, Halle, Germany. All rights reserved.