Distribution and flux of micrometeoroids

Details Distribution and flux of micrometeoroids Distribution and flux of micrometeoroids

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977rspta.285..379m&link_type=abstract

(Royal Society, Discussion on the Moon - A New Appraisal from Space Missions and Laboratory Analyses, London, England, June 9-12

Computer Science

2

Lunar Craters, Lunar Rocks, Meteoroid Concentration, Micrometeoroids, Particle Size Distribution, Apollo 17 Flight, Calibrating, Energy Spectra, Frequency Distribution, Impact Damage, Interplanetary Dust, Mass Distribution, Micrometeorites, Particle Tracks, Solar Flares

Scientific paper

The mass distribution, flux, and distribution in space of the micrometeoroid complex at 1 AU are estimated on the basis of data from Apollo 17 rocks and recent calibrations of solar-flare track-production rates. It is found that the size frequency distribution of microcraters on lunar rocks suggests a bimodal mass distribution of micrometeoroids, but the precise form of the curve requires further definition, particularly insofar as the degree of depletion of particles producing craters 10 to 100 microns in diameter is concerned. Variations in slope with crater-diameter or particle-mass increments are shown to indicate that different processes affect one or more particle populations. Fluxes corresponding to varied lunar surface orientation and residence time are calculated, but no striking difference is observed between the flux of submicron-diameter particles with orbits in the plane of the ecliptic and fluxes of particles with orbits normal to the plane in the solar apex direction.

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