Materials of 28. Polish Seminar on Positron Annihilation

The meeting was continuation of the conferences on positron annihilation inaugurated in 1966 (at Stog Izerski) by The Institute of Experimental Physics of Wroclaw University. The seminar covers the research fields related to phenomena of annihilation of low-energy positrons, the basic and the applied ones. The positron annihilation techniques: bulk lifetime spectroscopy and depth-resolved Doppler broadening have been extensively used for structural studies of metals, polymers and other matrices. Many theoretical works on electronic structure and positron interactions in materials have been presented as well