Status of an R&D project of a positron gun at 'Horia Hulubei' NIPNE Bucharest
| Autor: | C.N. Zoita, Catalina Chiojdeanu, Liviu Craciun, Florin Constantin, Ionica Alina Ghita, D. Bojin, Angela Vasilescu, Olimpiu Constantinescu, Petru Mihai Racolta, A. Kiss |
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| Rok vydání: | 2008 |
| Předmět: |
Physics
Astrophysics::High Energy Astrophysical Phenomena Modular system Cyclotron General Physics and Astronomy Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films Positron annihilation spectroscopy law.invention Nuclear physics Positron law Physics::Accelerator Physics Positron annihilation Doppler broadening |
| Zdroj: | Applied Surface Science. 255:46-49 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2008.05.193 |
| Popis: | A new positron gun (PG) will enable high sensitivity measurements in applications of positron annihilation spectroscopy in Romania. Some data concerning the design of a modular system for focussing, transport and acceleration of mono-energetic positrons in the range 0.8–50 keV have been obtained and experimenting on moderators and CDBS was performed. We present a short overview of the present status of the project and preliminary results from Coincidence Doppler Broadening Spectroscopy with a 22NaCl source, on Al samples. The entire positron gun system will be designed as a high-vacuum dedicated extension operating with two options: a 50 mCi 22NaCl source and in-line with the NIPNE cyclotron or a new intense compact cyclotron. |
| Databáze: | OpenAIRE |
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