Publication Date:
2005-11-30
Description:
Screws 9 and 23 from Surveyor 3 were examined with a scanning electron microscope for micrometeorite impact features. Six craters on one of the screws appear to be low velocity impact craters, and a flux for about 0.12 sq cm was calculated to be 0.005/sq m/sec for particle diameter or = 1 micron. Two interpretations are considered: (1) The impacts were produced by interplanetary particles and the flux indicates that deviation from the normal distribution exists only for particles below 1 micron in diameter. (2) Most of the craters were produced by secondary lunar debris, and the flux represents the upper limit for interplanetary particles.
Keywords:
SPACE SCIENCES
Type:
NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 167-172
Format:
text
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