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- W1662421065 abstract "A systematic experimental study of Cs and CsH2 adsorption on W (100) surfaces by LEED and work function measurements has been made. It was found that at high coverages the electropositive and electronegative adsorbates formed a double layer. The arrangement of the adsorbates was independent of the sequence of deposition. The two adsorbates affected the structures of each other: a Cs layer caused an increase in ordering and binding energy of H on W and the existence of H on W(100) caused an increase in the maximum density of Cs atoms that can be deposited on the surface. This increase in Cs density was accompanied by an increase in work function. The coverage of Cs at the work function minimum was also shifted to a smaller value with increasing amount of initially adsorbed H2. The work function result was compared with a recent non-uniform electron gas theory of work function. The adsorption of H2 on Cs-covered W was found to be an activated process and the sticking coefficient decreased exponentially with increasing Cs coverage. It appears that adsorption of Cs did not form a duolayer on W (100), as reported by MacRae et al., rather it formed a single layer on top of some patches of hydrogen impurity. The small amount of H impurity was not ordered unless there was a layer of Cs on top." @default.
- W1662421065 created "2016-06-24" @default.
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- W1662421065 date "1973-09-01" @default.
- W1662421065 modified "2023-09-27" @default.
- W1662421065 title "Coadsorption of electropositive and electronegative elements" @default.
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- W1662421065 doi "https://doi.org/10.1016/0039-6028(73)90003-4" @default.
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