The subject of this book is the investigation of lattice imperfections in semiconductors by
means of positron annihilation. A comprehensive review is given of the different positron …

We consider the specific problem of the influence of an inhomogeneous distribution of
defects in solids on positron annihilation characteristics. In detail, we investigate the effect of …

An overview is given on positron annihilation studies of vacancy-type defects in Cd-and Zn-
related II− VIcompound semiconductors. The most noticeable results among the positron …

We investigate the influence of microstructure (dislocations, and grain and subgrain
boundaries) on the sintering process in compacts of electrolytic and spherical copper …

We investigate the reliability and self-consistency of source corrections in positron lifetime
spectroscopy using a 22Na e+-emitter covered by thin metal foils. Furthermore, we study the …

The present report describes a Windows based computer program called PALSfit3. The
purpose of the program is to carry out analyses of spectra that have been measured by …

Using a density-functional-based tight-binding method we investigate the stability of various
vacancy clusters up to a size of 17 vacancies. Additionally, we compute the positron lifetimes …

Vacancy and solute atom clusters of various sizes and number densities may be formed in
Al alloys during natural ageing (NA) after solutionising and quenching. We study the …

We investigate the artificial aging process of the weldable Al-alloys AA-6013 (AlMgSiCu)
and AA-6061 (AlMgSi) by positron annihilation spectroscopy and Vickers micro-hardness …

Isochronal annealing investigations in electron-irradiated 6 H− SiC were correlated with
temperature-dependent measurements of positron lifetime. It turned out that the positron …