NOMATEN HYBRID-SEMINAR October 6: Defect studies with positron annihilation spectroscopy

Start date
2026-10-06, 13:00

NOMATEN HYBRID-SEMINAR

online: https://meet.goto.com/NCBJmeetings/nomaten-seminar
In-person: NOMATEN seminar room (102)

Tuesday, October 6th  2026 1 PM (CET)

Defect studies with positron annihilation spectroscopy

dr hab. Paweł Horodek
Institute of Nuclear Physics of the Polish Academy of Sciences, Kraków, Poland

 

Abstract:

Modern materials characterization increasingly emphasizes the importance of studying structural defects alongside conventional analyses of phase composition, morphology, and crystallographic structure. Since defects strongly affect the physical, mechanical, and functional properties of materials, their investigation is essential for a complete understanding of material behavior. In this context, positron annihilation spectroscopy (PAS) constitutes a highly sensitive method for the detection of structural defects, such as vacancies, their cluster, voids, etc. PAS can provide unique information inaccessible to conventional characterization methods such as neutron techniques, X-ray diffraction (XRD), electron microscopy, or spectroscopic analyses. In the frame of the presentation, the basics of PAS, experimental procedure, data analysis and interpretation as well as examples of application in various fields will be discussed.

 

Bio:

Paweł Horodek, DSc is an associate professor at the Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN) in Kraków. His research focuses on solid-state physics, positron annihilation spectroscopy, ion implantation and radiation-induced defects in materials. He spent seven years conducting research at the Joint Institute for Nuclear Research (JINR) in Dubna, where he developed positron annihilation spectroscopy and slow monochromatic positron beam techniques for the investigation of structural defects in materials. His current research interests include radiation damage, defect characterization and the application of positron-based methods in materials science and engineering.

 

Paweł Horodek

 

 

Galeria
dr hab. Paweł Horodek

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This project has received funding from the European Union Horizon 2020 research and innovation
programme under grant agreement No 857470 and from European Regional Development Fund
via Foundation for Polish Science International Research Agenda PLUS programme grant
No MAB PLUS/2018/8.
Poland
The project is co-financed from the state budget within the framework of the undertaking of the Minister of Science and Higher Education "Support for the activities of Centers of Excellence established under Horizon 2020".

Grant: 5 143 237,70 EUR
Total value: 29 971 365,00 EUR
Date of signing the funding agreement: December 2023

The purpose of the undertaking is to support entities of the higher education and science system that have received funding from the European Union budget in the competition H2020-WIDESPREAD-2018-2020/WIDESPREAD-01-2018-2019: Teaming Phase 2. in the preparation, implementation and updating of activities, maintenance of material resources necessary for carrying out activities, acquisition and modernization of scientific and research apparatus, maintenance and development of personnel potential necessary for the implementation of activities, and dissemination of the results of scientific activities.