Effect of irradiation by argon ions on hydrogen transport through the surface oxide layer of zirconium

19th Conference on Plasma Surface Interactions

Evsin, A.E.^1 ; Begrambekov, L.B.^1 ; Gumarov, A.I.^2 ; Kashapov, N.F.^2 ; Luchkin, A.G.^2 ; Vakhitov, I.R.^2 ; Yanilkin, I.V.^2 ; Tagirov, L.R.^2

National Research, Nuclear University, MEPhI (Moscow Engineering Physics Institute), 31 Kashirskoe highway, Moscow

115409, Russia^1

Kazan Federal University, 18 Kremlevskaya st., Kazan

420008, Russia^2

关键词: Argon ion;    Deuterium trapping;    Hydrogen desorption;    Hydrogen transport;    Oxygen depletion;    Surface oxide layer;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/748/1/012011/pdf
DOI  :  10.1088/1742-6596/748/1/012011

来源: IOP

【 摘 要 】

Effect of zirconium irradiation by 1 keV Ar+ions on hydrogen transport through the surface oxide layer is studied. It is shown that deuterium trapping under subsequent irradiation of the Ar-treated sample by deuterium atoms of thermal energies in D2+ 30at.% O2gas mixture is 2 times less than trapping in the untreated sample. Besides, irradiation of the untreated sample by D-atoms provokes desorption of ≈25% of hydrogen contained therein, whereas hydrogen desorption from the ion-treated zirconium surface does not occur. It is proposed that oxygen depletion of the surface oxide layer, caused by ion bombardment, is a reason of mitigation of the hydrogen transport through this layer in both directions.