Flux and composition of micrometeoroids in the diameter range 1-10 microns (lunar surface studies)

A morphological study of microcraters observed on glassy lunar spherules from the Apollo 15 fines obtained from Spur crater near Hadley Rille and of those created on glassy materials in the laboratory is evaluated. Craters were produced in soda lime and tektite glasses by the bombardment of iron and...

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Bibliographic Details
Published in:Nature (London) 1974-11, Vol.252, p.101-106
Main Authors: Smith, D, Adams, N G, Khan, H A
Format: Article
Language:English
Online Access:Get full text
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Summary:A morphological study of microcraters observed on glassy lunar spherules from the Apollo 15 fines obtained from Spur crater near Hadley Rille and of those created on glassy materials in the laboratory is evaluated. Craters were produced in soda lime and tektite glasses by the bombardment of iron and aluminum microparticles which were electrostatically accelerated using a 2 MV Van de Graaff generator. It was suggested that three material crater groupings result from the impacts of micrometeoroids of distinctly different physical properties. The result indicated that 20% of the total mass of micrometeoroid material is associated with iron micrometeoroids while the remaining 80% is divided between low density stony groups.
ISSN:0028-0836