Hostname: page-component-76fb5796d-zzh7m Total loading time: 0 Render date: 2024-04-29T05:01:47.220Z Has data issue: false hasContentIssue false
  • English
  • Français

Electrostatic Fragmentation of Dust Particles in Laboratory

Published online by Cambridge University Press:  07 August 2017

J. Svestka  and
E. Grün
J. Svestka
Affiliation:
Prague Observatory, 11846 Prague 1, Czechoslovakia
E. Grün
Affiliation:
Prague Observatory, 11846 Prague 1, Czechoslovakia

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Experimental laboratory work on simulation of the electrostatic fragmentation was started with loosely bound Al2O3 particles of 1 to 10 micrometers size. These particles were suspended in an electrodynamic quadrupole inside a vacuum chamber and electrically charged by ion beams of energies up to 5 keV. The electrostatic fragmentation was observed and derived tensile strengths of the particles range from 103 to 105 Pa what is compatible with theoretical estimates. A dependence of the tensile strength on the size of particles has been found. This dependence can be well fitted by inverse square power law.

Type
Basic Studies
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 17 - 18
Copyright
Copyright © Kluwer 1992 

References

REFERENCES

Boehnhardt, H. and Fechtig, H. (1987) ‘Electrostatic charging and fragmentation of dust near P/Giacobini-Zinner and P/Halley’, Astron. Astrophys. 187, 824–828.Google Scholar
Draine, B.T. and Salpeter, E.E. (1979) ‘On the physics of dust grains in hot gas’, Astrophys. J. 231, 77–94.Google Scholar
Fechtig, H., Grün, E. and Morfill, G.E. (1979) ‘Micrometeoroids within ten Earth radii’, Planet. Space Sci. 27, 511–531.CrossRefGoogle Scholar
Grün, E., Morfill, G.E. and Mendis, D.A. (1984) ‘Dust-magnetosphere interactions’, in Greenberg, R. and Brahic, A. (eds.), Planetary Rings, Univ. of Arizona Press, Tuscon, pp. 275–332.Google Scholar
Hill, J.R. and Mendis, D.A. (1981) ‘Electrostatic disruption of a charged conducting spheroid’, Can. J. Physics 59, 897–901.Google Scholar
Pinter, S., Svestka, J. and Grün, E. (1990) ‘Interaction of dust particles with electrons and ions’, in Bussoletti, E. and Vittone, A.A. (eds.), Dusty Objects in the Universe, Kluwer Academic Publishers, Dordrecht, pp. 139–146.Google Scholar
Svestka, J., Grün, E., Pinter, S. and Schumacher, S. (1987) ‘Laboratory charging of dust by electrons and ions’, Publ. of Astron. Inst. of Czechoslovak Academy of Sci. 67, 277–280.Google Scholar
Svestka, J. and Grün, E. (1991) ‘Methods, difficulties and first results in laboratory simulation of cosmic dust electric charging’ in Levasseur-Regourd, A.C. (ed.), Origin and Evolution of Interplanetary Dust, in press.Google Scholar