SWIFT PROTON MICROBEAM-INDUCED DIFFUSION IN GLASSES

Authors
MOSBAH M DURAUD JP
Citation
M. Mosbah et Jp. Duraud, SWIFT PROTON MICROBEAM-INDUCED DIFFUSION IN GLASSES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 141(1-4), 1998, pp. 594-599
Citations number
8
Categorie Soggetti
Instument & Instrumentation","Nuclear Sciences & Tecnology","Physics, Atomic, Molecular & Chemical","Physics, Nuclear
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
141
Issue
1-4
Year of publication
1998
Pages
594 - 599
Database
ISI
SICI code
0168-583X(1998)141:1-4<594:SPMDIG>2.0.ZU;2-O
Abstract
Na and Ca diffusion was induced in glasses by intense microbeams of sw ift protons. By contrast with previous studies using macrobeams (semi- infinite geometry), the geometry of the interaction is cylindrical whi ch offers new directions for diffusion. Furthermore, we explored the i nfluence of high current densities. The main results show that Na migr ates towards the surface in the irradiated zone, and is then spread ar ound this region. The Ca signal variation is not interpreted as a diff usion process, but only as a reflection of the change in matrix densit y. The Na migration is shown to be driven by an electric field created in the irradiated cylindrical zone. (C) 1998 Elsevier Science B.V. Al l rights reserved.