The Helmholtz-Zentrum Dresden-Rossendorf operates a superconducting linear
accelerator for electrons with energies up to 35 MeV and average beam currents up to 1.6 mA.
The electron beam is employed for production of several secondary beams including X-rays
from bremsstrahlung production, neutrons, and positrons. The secondary positron beam after
moderation feeds the Monoenergetic Positron Source (MePS) where positron annihilation
lifetime (PALS) and positron annihilation Doppler-broadening experiments in materials
science are performed in parallel. The adjustable repetition rate of the continuous-wave
electron beams allows matching of the pulse separation to the positron lifetime in the sample
under study. The energy of the positron beam can be set between 0.5 keV and 20 keV to
perform depth resolved defect spectroscopy and porosity studies especially for thin films.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:84928 |
| Date | 25 April 2023 |
| Creators | Wagner, A., Anwand, W., Attallah, A.G., Dornberg, G., Elsayed, M., Enke, Dirk, Hussein, A.E.M., Krause-Rehberg, R., Liedke, M.O., Potzger, K., Trinh, T.T. |
| Publisher | IOP Publishing |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 1742-6596, 012004 |
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