Investigation of the composition of precipitates in Al-Ag by Doppler spectroscopy of core electrons
- Author(s)
- G Bischof, Viktor Gröger, Gerhard Krexner
- Abstract
Doppier spectroscopy of core electrons is used to obtain information about the composition of silver-rich precipitates in Al-Ag. Two-dimensional annihilation spectra were recorded both for elemental Al and Ag and for an Al-6at. %Ag alloy. Experimental data are compared with calculations based on density functional theory using the generalized gradient approximation (GGA) for the positron annihilation. In accordance with earlier work positron trapping at precipitates could be found. A qualitative comparison of the experimental and theoretical momentum distributions and the quantitative analysis by means of line shape parameters enables the determination of the composition of the precipitates.
- Organisation(s)
- Physics of Functional Materials
- External organisation(s)
- Fachhochschule Joanneum
- Pages
- 51-53
- No. of pages
- 3
- DOI
- https://doi.org/10.4028/www.scientific.net/MSF.445-446.51
- Publication date
- 2004
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/investigation-of-the-composition-of-precipitates-in-alag-by-doppler-spectroscopy-of-core-electrons(8c3b9b9d-61b1-458b-9d28-0748cde8c6cc).html