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The moon

, Volume 8, Issue 3, pp 368–391 | Cite as

Aggregation of grains in space

  • G. Arrhenius
  • S. K. Asunmaa
Article

Abstract

Persistent electrostatic charge is a characteristic feature in lunar soil and results in cohesion forces between the grains ranging in the order of 102 dyn. We suggest that this phenomenon is responsible for the initial aggregation of grains in the formative era of the solar system. The effect would become important when the relative velocity between particles at grazing incidence or collision has been reduced to order of 102 m s−1. The electrostatic adhesion mechanism would also explain the suggestion from optical polarization measurements that small asteroids accumulate silicate dust.

Electrostatic accretion and bonding would consequently appear to be a process of basic importance in the solar system, both in the formative era and today.

Keywords

Dust Silicate Characteristic Feature Solar System Relative Velocity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© D. Reidel Publishing Company 1973

Authors and Affiliations

  • G. Arrhenius
    • 1
  • S. K. Asunmaa
    • 1
  1. 1.Scripps Institution of OceanographyUniversity of CaliforniaSan Diego, La JollaUSA

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