Probing overheatings under microprobe irradiation via Zn vaporisation

G Plumereau (1) , Pierre Ailloud (1) , P Berger (1) , D. Boutard (1) , M J Guittet (2) , F Ladieu (3, 1)

1 LPS - Laboratoire Pierre Süe
2 SRSIM - Service de Recherche sur les Surface et l'Irradiation de la Matière
3 SPEC - UMR3680 - Service de physique de l'état condensé

A thin layer of ZnO 0.3 deposited on a SiO 2 glass substrate was irradiated with a 2 MeV α microbeam. The disappearance of ZnO 0.3 in the neighbourhood of the beam was registered in situ. We quantitatively account for this behaviour in the framework of a very simple vaporisation model based both upon the local temperature increase resulting from the microbeam itself and upon the variation of the Zn vapour pressure with the local temperature. Other possible explanations are briefly discussed.

Mots clés: THERMAL SPIKE DESCRIPTION; SWIFT HEAVY-IONS; NUCLEAR MICROPROBE; HOPPING CONDUCTIVITY; DISORDERED-SYSTEMS; PROTON MICROBEAM; TEMPERATURE; INSULATORS; SPECIMEN; MODELS

Domaines: Physique [physics]

G Plumereau, Pierre Ailloud, P Berger, D. Boutard, M J Guittet, et al.. Probing overheatings under microprobe irradiation via Zn vaporisation. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999, 149, pp.153 - 166. ⟨10.1016/S0168-583X(98)00638-7⟩. ⟨cea-01395514⟩