Skip to Main content Skip to Navigation
Theses

Contribution à l'étude de la pulvérisation et de l'endommagement du dioxyde d'uranium par les ions lourds rapides

Abstract : Swift heavy ion-solid interaction leads in volume to track creation and on the surface to the ejection of particles into the vacuum. To learn more about initial mechanisms of track formation, we are focused on the sputtering of uranium dioxide by fast heavy ions. This present study is exclusively devoted to the influence of the electronic stopping power on the emission of neutral particles and especially on their angular distribution. These measurements are completed by those of the ions emitted from UO2 targets bombarded with swift heavy ions. The whole experimental results give access to : i) the nature of the sputtered particles ; ii) the charge state of the emitted particles ; iii) the direction of ejection of the sputtered particles ; iv) the sputtering yields deduced from the angular distributions. These results are compared to the prediction of the sputtering models proposed in the literature and it seems that the supersonic gas flow model is well suited to describe our results. Finally, the sputtering yields are compared with a set of earlier experimental data on uranium dioxide damage obtained by T. Wiss and we observe that only a small fraction of UO2 monolayers are sputtered.
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00002110
Contributor : Sandrine Schlutig <>
Submitted on : Tuesday, December 10, 2002 - 5:59:58 PM
Last modification on : Tuesday, February 5, 2019 - 12:12:10 PM
Long-term archiving on: : Friday, April 2, 2010 - 6:16:38 PM

Identifiers

  • HAL Id : tel-00002110, version 1

Citation

Sandrine Schlutig. Contribution à l'étude de la pulvérisation et de l'endommagement du dioxyde d'uranium par les ions lourds rapides. Physique [physics]. Université de Caen, 2001. Français. ⟨tel-00002110⟩

Share

Metrics

Record views

391

Files downloads

294