Accession Number : AD0699426

Title :   LUNAR SOIL SIMULANT STUDY, PHASE B, PART I. OUTGASSING CHARACTERISTICS.

Descriptive Note : Final rept.,

Corporate Author : OHIO RIVER DIV LABS CINCINNATI

Personal Author(s) : Hubbard,J. H. ; Gall,E. S.

Report Date : DEC 1969

Pagination or Media Count : 45

Abstract : The work describes an investigation of the outgassing characteristics of diabase rock crushed to a gradation equivalent to a fine sand. Materials were heated in air to various temperatures and for several exposure periods and were then placed in a high vacuum chamber for pump down. The variation of pressure with time was plotted and the effect of nitrogen overlays between successive pump downs were evaluated. The one-dimension diffusion equation was solved to indicate the way in which pressure varies with depth. (Author)

Descriptors :   (*MOON, SOILS), (*ROCK, GASES), TEMPERATURE, SIMULATION, NITROGEN, PRESSURE, VACUUM APPARATUS, TEST METHODS

Subject Categories : Astrophysics
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE