Accession Number : AD0736428

Title :   Differential Thermal Analysis and Gas Release Studies of Apollo 11 Samples.

Descriptive Note : Rept. for Dec 69-Jan 70,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Wachi,Frank M. ; Gilmartin,Donald E. ; Oro,John ; Updegrove,William S.

Report Date : 15 NOV 1971

Pagination or Media Count : 27

Abstract : The liquidus-solidus behavior of Apollo 11 lunar fines and the evolution characteristics of CO, N2, He, Ne, and Ar were investigated by use of the combined techniques of high-vacuum differential thermal analysis (DTA) and mass spectrometry between 100 and 1500C. The DTA thermogram has shown that the lunar fines undergo partial melting over a broad range of temperature from about 915 to 1300C, with a significant initial melting of glassy and crystalline components within the fines at about 1140C. The thermal evolution curves for the noble gases have indicated that these gases come from several sources, the principal sources being the solar wind, radiogenic decay reactions, and spallation processes. (Author)

Descriptors :   (*MOON, ROCK), (*GASES, DIFFERENTIAL THERMAL ANALYSIS), ORGANIC MATERIALS, NITROGEN, HELIUM, NEON, ARGON, MASS SPECTROSCOPY, CARBON MONOXIDE, PYROLYSIS, IONIC CURRENT, MASS SPECTRA, MELTING, SOLAR WIND, MANNED SPACECRAFT

Subject Categories : Astrophysics
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE