Positron Annihilation Spectroscopy at the LEPTA Facility

Positron Annihilation Spectroscopy (PAS) is a sensitive method dedicated to detection of open-volume type of defects in materials. Nowadays, this technique is of a great interest due to the practical character of obtained results. New devices using monoenergetic positron beams are built. The poster presents progress in this field at LEPTA project at Joint Institute for Nuclear Research in Dubna, present and future directions of works.