| Numéro |
J. Phys. Colloques
Volume 49, Numéro C6, Novembre 1988
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
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| Page(s) | C6-185 - C6-190 | |
| DOI | https://doi.org/10.1051/jphyscol:1988631 | |
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
J. Phys. Colloques 49 (1988) C6-185-C6-190
DOI: 10.1051/jphyscol:1988631
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-1000 Berlin 33, F.R.G.
J. Phys. Colloques 49 (1988) C6-185-C6-190
DOI: 10.1051/jphyscol:1988631
FIELD IONISATION AND FIELD ADSORPTION OF HYDROGEN
W. DRACHSEL et J.H. BLOCKFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-1000 Berlin 33, F.R.G.
Abstract
The relaxation of the field ionisation rate after depletion of a tungsten surface is studied for hydrogen and helium with a pulsed laser atom probe. The reduction of the field ion rate and its recovery to a steady state value within some milliseconds is due to a correlation between field ion rate and surface coverage. Three possible models are discussed for explaining the enhancement of the rate by an occupied site.