Toward a model of grain surface exposure in planetary regolithsThe interpretation of solar wind implanted gas concentration versus particle size for lunar regolith samples is considered. In so doing, interparticle adhesive forces are considered explicitly and the simplest possible grain exposure law consistent with the existence of such forces is hypothesized. Namely, for particles small enough that these forces exceed the lunar gravitational force, any element of area has equal probability of being in the regolith surface regardless of the size of the grain on which it is situated. This law leads to the expectation that concentrations will depend inversely on mean grain radius for small grains and gradually become independent of radius for very large grains consistent with observations. Therefore, such a concentration dependence cannot by used to infer the presence of saturation losses.
Document ID
19810064425
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Housley, R. M. (Rockwell International Science Center Thousand Oaks, CA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Conference on The ancient sun: Fossil record in the earth, moon and meteorites