Toward a European network of positron laboratories
| Autor: | Grzegorz P. Karwasz, Roberto S. Brusa, Werner Egger, Olga V. Ogorodnikova |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Risk
Nuclear and High Energy Physics Thermonuclear fusion Silicon Science chemistry.chemical_element Electron Material science Positron Positron beams Irradiation Safety Risk Reliability and Quality Instrumentation Waste Management and Disposal Physics Annihilation Thermonuclear reaction Nuclear Energy and Engineering Condensed Matter Physics material science chemistry thermonuclear reaction Reliability and Quality Physics::Accelerator Physics Atomic physics positron beams Safety Water vapor Doppler broadening |
| Zdroj: | Nukleonika, Vol 60, Iss 4, Pp 733-739 (2015) |
| Popis: | Some applications of controlled-energy positron beams in material studies are discussed. In porous organic polysilicates, measurements of 3γ annihilation by Doppler broadening (DB) method at the Trento University allowed to trace pore closing and filling by water vapor. In silicon coimplanted by He+ and H+, DB data combined with positron lifetime measurements at the München pulsed positron beam allowed to explain Si blistering. Presently measured samples of W for applications in thermonuclear reactors, irradiated by W+ and electrons, show vast changes of positron lifetimes, indicating complex dynamics of defects. |
| Databáze: | OpenAIRE |
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