The Surface Potential of Carbon Monoxide on the Single Crystal Surfaces of Tungsten

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概要

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• The surface potential (s.p.) of CO adsorbed at room temperature on the (110) and (111) single crystal surfaces of tungsten is determined to be 0.45±0.03eV and 0.80±0.03 eV respectively using the Kelvin technique. At an exposure of about 10^<-5> Torr.s, the s.p. tends to a steady value, which depends slightly on the CO pressure. It is shown that the usual expression for the number of molecules incident on unit area of a surface, N=3.51×10^<22>P(Torr)・τ(sec)/(MT_k)^<1/2>, is inapplicable to a surface very close to another one. Taking this into account, previous results on the (100) and (112) tungsten surfaces, Supplemento al Nuovo Cimento 5 (1967) 535, have been recalculated. Flash desorption for the (111) crystal displays three peaks at 810°K, 1070°K, 1240°K.

• 社団法人日本物理学会の論文
• 1972-04-05

著者

• Usami Seiji

  Surface Physics The University-southampton:(present Address) Faculty Of Engineering Yokohama Nationa

関連論文

• The Surface Potential of Carbon Monoxide on the Single Crystal Surfaces of Tungsten

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