Abstract
The radiation-induced erosion of the tungsten field emitter surface exposed to low-energy ions is studied by field ion microscopy and electron microscopy. During the bombardment, surface atoms are displaced to sites with lower coordination numbers and nanoasperities, generating a locally enhanced electric field, arise on the surface in a jump-like manner, which modifies the characteristics of the emitters. The field evaporation of the asperities produces cavities; hence, the erosion can be described in terms of blistering. Quasi-static surface erosion mechanisms are considered. It is shown that nanoblistering can be related to helium absorption in metal surface layers.
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Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 72, No. 7, 2002, pp. 117–121.
Original Russian Text Copyright © 2002 by Mazilova, Mikha\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \)lovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \).
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Mazilova, T.I., Mikhailovskii, I.M. Erosion of the field emitter surface exposed to low-energy ions. Tech. Phys. 47, 910–914 (2002). https://doi.org/10.1134/1.1495058
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DOI: https://doi.org/10.1134/1.1495058