Effect of primary ion energy and surface chemistry on the secondary ion yields in low-energy SIMS experiments
- 1 March 1978
- journal article
- Published by American Vacuum Society in Journal of Vacuum Science and Technology
- Vol. 15 (2) , 668-671
- https://doi.org/10.1116/1.569668
Abstract
The chemisorption of oxygen on W(100) and Mo(100) single-crystal surfaces was studied using a static mode SIMS technique at primary ion energies ranging from 150 eV to 2 keV. The following secondary ion yields O−, WO−2, and MoO−2 were found to be sensitive to the changes in the chemisorbed oxygen layer at different stages of chemisorption. Significant enhancement in the sensitivity of the O− yield to the chemisorption process was observed when the energy of the Ne+ primary ion energy was below 500 eV.Keywords
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