10B enriched film deposited by e-beam technique on Al2O3 substrates for high efficiency thermal neutron detector
| Autor: | L. Quintieri, Antonella Mancini, F. Murtas, Marco Renzelli, G. Celentano, Edoardo Bemporad, Angelo Vannozzi, G. Claps, A. Santoni, Antonino Pietropaolo |
|---|---|
| Přispěvatelé: | Celentano, G, Vannozzi, A, Mancini, A, Santoni, A, Pietropaolo, A, Claps, G, Bemporad, Edoardo, Renzelli, Marco, Murtas, F, Quintieri, L., Claps, G., Pietropaolo, A., Santoni, A., Mancini, A., Vannozzi, A., Celentano, G. |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
X-ray photoelectron spectroscopy
10B-enriched films Materials science Analytical chemistry Residual stre Substrate (electronics) Scintillator PVD film Nanoindentation Ion beam micro-ring-core method Neutron detection B coated alumina PVD films Materials Chemistry Nano-porosity Neutron Molybdenum Surfaces and Interfaces General Chemistry Sputter deposition Condensed Matter Physics Evaporation (deposition) Surfaces Coatings and Films Gas electron multiplier 10B-enriched film Tribological tests Magnetron sputtering |
| Popis: | In the framework of the research and development activity on He-free neutron detection systems, the solid state physics experimental techniques and characterization tools can provide a valuable contribution for detector assessment and performance improvement. Presently, a He-replacement strategy relies on the use of Li-and/or B-based neutron to charge particle converters coupled to particle detectors (solid state, gaseous, scintillators). In particular, in this paper the detailed structural and chemical-physical characterization of B-10-enriched films deposited by e-beam evaporation onto alumina substrates is reported. X-ray diffraction and photoelectron spectroscopy investigations have revealed that high B content (about 78%) can be achieved on these films, contaminants being mainly C and O most likely coming from the B targets. Microstructural investigation carried out by AFM, SEM and nanoindentation techniques have mainly revealed that B films replicated the alumina substrate microstructural features. The described B-10/Al2O3 samples were successfully tested in a Gas Electron Multiplier based neutron detector with measured detection efficiency in full agreement with the expectations. (C) 2015 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|