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Investigation of submicron volcanic aerosol-particles by photoelectron emission

Authors
Journal
Journal of Volcanology and Geothermal Research
0377-0273
Publisher
Elsevier
Publication Date
Volume
33
Issue
4
Identifiers
DOI: 10.1016/0377-0273(87)90025-4

Abstract

Abstract Volcanic aerosol emissions have been studied for the first time by in situ photoelectric charging. Explorative studies on Mt Etna reveal large concentrations of particles below 1000 nm with the spectrum peaking in the size range of 100–1000 nm diameter. Although a large fraction of the particles is already charged upon emission, the net electrical charge carried by the aerosol turned out to be close to zero. Particles with high photoelectric yield vary greatly in their relative abundance and seem to occur mainly at active points of the volcano.

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