|
|||||
|
|
Mapping of hydrogen isotopes with a scanning nuclear microprobe |
|
| Authors: | Per Petersson,Henric Bergså ker,Jens Jensen |
| Affiliation: | a Division of Ion Physics, The Ångström Laboratory, Box 534, Uppsala University, SE-751 21 Uppsala, Sweden b Division of Fusion Plasma Physics (Association EURATOM-VR), Alfvén Laboratory, School of Electrical Engineering, Royal Institute of Technology KTH, SE-100 44 Stockholm, Sweden c Department of Microelectronics and IT, Royal Institute of Technology, SE-164 40 Kista, Sweden |
| Abstract: | Elastic recoil detection analysis using heavy ions with a scanning nuclear microprobe was applied to determine the content of hydrogen isotopes in carbon material facing fusion plasma in the JET fusion reactor. The hydrogen and deuterium concentrations in re-deposited material were obtained by mapping a cross sectional cut of a wall sample. De-trapping and hydrogen release caused by the primary ion beam were investigated. For both the deuterium and hydrogen concentration a drop of ∼75% was observed from an extrapolated initial value to a final steady state region. A procedure was used to determine the initial concentration. In this way a mapping of the initial deuterium concentration could be obtained. |
| Keywords: | 79.20.Rf 52.55.Fa |
| 本文献已被 ScienceDirect 等数据库收录！ | |