LOCAL ADLAYER ORDER AND STICKING PROBABILITY - D2 ADSORPTION ON P(2X2)O/PT(111)

被引：0
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作者：
HUGENSCHMIDT, MB
VERHEIJ, LK
FREITAG, MK
POELSEMA, B
COMSA, G
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来源：
SURFACE SCIENCE | 1991年 / 259卷 / 03期
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中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of the order of an oxygen adlayer on Pt(111) on the adsorption of D2 has been investigated using a combination of He diffraction and reactive scattering techniques. A close correlation was found between the onset of the order/disorder phase transition of the p(2 x 2)O structure and an increase of the D2 sticking probability. A detailed analysis shows that the adsorption process responsible for this phenomenon is nonactivated and that it is sensitive to local order on a scale of 4-7 atoms. An explanation is proposed which considers the influence of the local symmetry on the dynamics of the adsorption process.
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页码：L763 / L768
页数：6
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