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Positron Annihilation Spectroscopy at LEPTA Facility
- Source :
- Materials Science Forum. 733:322-325
- Publication Year :
- 2012
- Publisher :
- Trans Tech Publications, Ltd., 2012.
-
Abstract
- 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.
- Subjects :
- 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
Subjects
Details
- ISSN :
- 16629752
- Volume :
- 733
- Database :
- OpenAIRE
- Journal :
- Materials Science Forum
- Accession number :
- edsair.doi...........a155f884c5a06786ba2fea90b20f4c36