Electrostatic Modelling of the Lunar Soil – How Electrostatic Processes in the Lunar Dust May Generate the Ion-Cloud Levitating Above the Surface on the Moon – Experiments in a Model Instrument | Szegedi Tudományegyetem, Ásványtani, Geokémiai és Kőzettani Tanszék

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Kende, Eufrozina

Electrostatic Modelling of the Lunar Soil – How Electrostatic Processes in the Lunar Dust May Generate the Ion-Cloud Levitating Above the Surface on the Moon – Experiments in a Model Instrument

Reference:
Acta Mineralogica-Petrographica, Szeged 2002, Vol. 43, pp. 55-58

Szerző:
Földi T.
Bérczi Szaniszló

Abstract:
According to the measurements of Surveyor landers and Apollo 17 LEAM experiments a levitating lunar dust cloud appears above the lunar surface. We studied the united acts by UV radiation and solar wind from the Sun and the micrometeorite bombardment processes which we suggest generate through electrostatic processes an ion-cloud above any dusty (i.e. lunar) planetary surface. This levitating ion-cloud form a quasiatmosphere where charged dust particles can take part in different processes. We studied such electrostatic mechanisms of lunar (and planetary) dust in an instrumental experimental arrangement of FOELDIX-1. In these studies we concluded that dust particles can agglutinate by the alternating process of receiving and loosing charge. We found that during a longer interval in this process the electrostatically charged dust particles may produce larger and larger grains. The agglutinating grains also attract and include H2O molecules. As a consequence of these recognitions we suggest that considering longer time intervals there is a trend on any dusty planetary surface for composite agglutinated particles to be dragged by the solar radiation pressure toward the poles. In the vicinity of poles larger agglutinated particles are discharged, fall down and accumulate on the surface. The summary of the application of our model is the suggestion of accumulation of H2O molecules in the fine dust of the polar regions of planetary surfaces, especially on the Moon.

 

Letöltés

 

acta2002, dust, modelling, moon, planetology, soil

 

 

 




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