Mechanism of hydrogen promotion of field ionization and a new atom-probe field-ion-microscope experiment
- 15 November 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 10 (10) , 4205-4208
- https://doi.org/10.1103/physrevb.10.4205
Abstract
It is found that at the field strength where hydrogen promotion of field ionization occurs, the field-ion-microscope image spots flicker. This leads us to interpret the promotion effect as a field-ionization enhancement by the field adsorption of hydrogen at the apex of imaged surface atoms. A time-of-flight atom-probe experiment confirms this interpretation.Keywords
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