Positron Annihilation Spectroscopy at LEPTA Facility
| Autor: | V. N. Pavlov, S. L. Yakovenko, A. Sidorin, Ekaterina Ahmanova, A. Rudakov, A. G. Kobets, M. K. Eseev, V. I. Lokhmatov, Igor Meshkov |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Positron Lifetime Spectroscopy chemistry.chemical_element Condensed Matter Physics Positronium Positron annihilation spectroscopy Nuclear physics Neon Positron chemistry Mechanics of Materials Physics::Accelerator Physics Microelectronics General Materials Science Positron emission Atomic physics business Doppler broadening |
| Zdroj: | Materials Science Forum. 733:322-325 |
| ISSN: | 1662-9752 |
| Popis: | The Low Energy Positron Toroidal Accumulator (LEPTA) at JINR proposed for generation of positronium in flight can be used for positron annihilation spectroscopy (PAS) [1]. The positron injector of the LEPTA facility can generate continuous a slow positron beam with the intensity up to 1∙107s-1 at the energy in the range of a few eV to 100 keV and width of the spectrum 1 – 2 eV. The injector is based on radioactive 22Na isotope. The solid neon is used as a moderator to generate monochromatic beam. The parameters of the positron beam allow scanning the condensed matter in depth up to 10 microns with resolutions less than 10 nanometers and investigating layered structures for microelectronics and properties of a surface. |
| Databáze: | OpenAIRE |
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