Diffusion of O atoms at Ru(0001) surface induced by collision of O $_{2}$ with high kinetic energy

Takahashi, Shin*; Aruga, Tetsuya*; Teraoka, Yuden

Oxygen translational energy effects on initial oxidation processes and saturation coverage of O at a Ru(0001) surface were investigated using supersonic O $_{2}$ molecular beams and synchrotron radiation photoemission spectroscopic techniques. The change of surface core level spectrum of Ru 3d $_{5/2}$ by irradiation of O $_{2}$ beams with high translational energy indicates occurrence of collision-induced oxygen migration at the oxidized Ru(0001) surface. We suggest that such collision-induced migration provides suitable sites for dissociative adsorption of O $_{2}$ , resulting in higher O coverage at the Ru(0001) surface.

Language	:	Japanese
Journal	:	Denki Gakkai Rombunshi, A
Volume	:	136
Number	:	7
Pages	:	p.462 - 463
Publication Year/Month	:	2016/07
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Paper URL	:	https://doi.org/10.1541/ieejfms.136.462
DOI for research data	:
Keywords	:	Ru; 酸化; 光電子分光
Research Facility	:	SPring-8(大型放射光施設)
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Article of JAEA R&D Review	:
Cooperating Institute	:	コベルコ科研; 京都大学

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Registration No. : AA20150562
JAEA Abstracts No. :
Paper Submission No. : 26773

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Diffusion of O atoms at Ru(0001) surface induced by collision of O with high kinetic energy

Diffusion of O atoms at Ru(0001) surface induced by collision of O $_{2}$ with high kinetic energy