Measurements on field adsorption of neon and helium and the field ionization of a helium-neon mixture
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2021, Computer Physics CommunicationsCitation Excerpt :Each surface atom is seen as a protruding feature with a higher local curvature than the average curvature of the specimen, thereby enhancing the local electric field. These surface atoms are also locations where the gas atoms can adsorb and further enhance the roughness of the surface, and consequently the local field [25,26]. Note that Eq. (2) is an approximation of the actual tunnelling rate above the specimen’s surface.
Observation of synchronized atomic motions in the field ion microscope
2013, UltramicroscopyCitation Excerpt :When neon gas delivery is discontinued, the flickering comes to a stop in a few tens of seconds and the emission pattern resumes the steady intensity that is a characteristic of FIM image with pure helium gas. Historically similar experiments were first conducted by Nishikawa and Müller [10], Müller et al. [15] and other early FIM researchers [16–18]. Because these works were conducted before the advent of the MCP image intensifiers, the image was captured on a photographic film with long time exposures, so the brief flickering could not be directly observed.
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