Field-Induced Desorption of Cesium from Rhenium
- Authors: Bernatskii D.P.1, Pavlov V.G.1
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Affiliations:
- Ioffe Physical Technical Institute
- Issue: Vol 44, No 2 (2018)
- Pages: 178-180
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/207398
- DOI: https://doi.org/10.1134/S1063785018020153
- ID: 207398
Cite item
Abstract
Desorption of cesium atoms from a rhenium point emitter in an electric field has been studied by method of field-desorption microscopy (FDM). Dependence of the desorbing field on degree of emitter surface coverage with Cs atoms is established. The heat of Cs-atom adsorption, which is dependent on the surface concentration of adsorbate and work function of the surface, is estimated in the framework of the model of mirror-image forces for field-induced desorption. Saturation of the rhenium emitter with carbon leads to changes in the character of desorption and in the distribution of desorption zones on the emitter surface.
About the authors
D. P. Bernatskii
Ioffe Physical Technical Institute
Author for correspondence.
Email: bernatskii@ms.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. G. Pavlov
Ioffe Physical Technical Institute
Email: bernatskii@ms.ioffe.ru
Russian Federation, St. Petersburg, 194021