Development of positron annihilation spectroscopy at LEPTA facility
| Autor: | A. Yu. Rudakov, S. L. Yakovenko, A. G. Kobets, A. Sidorin, M. Bugdol, Igor Meshkov, Oleg Orlov, P. Horodek |
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| Rok vydání: | 2014 |
| Předmět: |
Physics
Nuclear and High Energy Physics Radiation Annihilation Positron beam Atomic and Molecular Physics and Optics Positronium Positron annihilation spectroscopy Nuclear physics Positron Vacancy defect Physics::Accelerator Physics Radiology Nuclear Medicine and imaging Atomic physics Spectroscopy Doppler broadening |
| Zdroj: | Physics of Particles and Nuclei Letters. 11:708-712 |
| ISSN: | 1531-8567 1547-4771 |
| Popis: | The Low Energy Positron Toroidal Accumulator (LEPTA) at JINR proposed for generation of positronium in flight can be used for Positron Anihilation Spectroscopy (PAS). This is the sensitive method for microstructure studies of solid body. The structural defects such as vacancies, vacancy clusters and nanovoids with the size 0.1–10 nm can be detected. In this paper the progress in the development of PAS at LEPTA facility will be presented. The description of Doppler broadening of annihilation gamma line technique and the examples of results obtained on slow positron beam will be shown. |
| Databáze: | OpenAIRE |
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