High-pressure scanning tunnelling microscopy study of microscopic gas discharges
✍ Scribed by Möller, D.; Rüetschi, M.; Haefke, H.; Güntherodt, H.-J.
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 293 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0142-2421
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✦ Synopsis
A high-pressure scanning tunnelling microscope was built to study the behaviour and properties of microscopic electrical gas discharges. Gas discharges could be produced with di †erent electrode geometries and materials in a wide pressure range of 1-200 bar. The inÑuence of these parameters on the formation of a plasma, occurring at the breakdown of an electrical gas discharge, is discussed in detail. The properties of a plasma in a high-pressure environment are compared to those in low-pressure regimes. An experimental set-up was designed for detailed plasma diagnostics by means of optical spectroscopy. First measurements of spectra show that this approach is suitable for the investigation of microscopic gas discharges.