Rare gas analysis of Apollo 11 glassy fragments

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dc.contributor.advisorHeymann, Dieteren_US
dc.creatorAllen, Sharon Corneliusen_US
dc.date.accessioned2016-04-22T21:58:38Zen_US
dc.date.available2016-04-22T21:58:38Zen_US
dc.date.issued1971en_US
dc.description.abstractThe He, Ne, and. Ar contents of nineteen Apollo-11 glasses and four Apollo-12 glasses were measured massspectrometrically. The glasses were variously colored particles: amber, clear, green, and brown, and were approximately 500 microns in size. We have found that these glassy fragments contain much smaller quantities of trapped gas (solar wind) than lithic fragments the same size. The color of the glass particles is indicative of their chemical composition. The elemental and isotopic ratios are similar to those for lunar bulk soil. It has been shown that the amber and green glasses, and possibly the brown glasses, contain a cosmogenic component of Ne21 which can be attributed to solar cosmic ray interactions with Mg24 and probably with Al27. Similarly, the clear glasses contain a cosmogenic component of Ar38 which can be attributed to solar cosmic ray interactions with Ca40. The Ne21radiation ages of three green glasses and one amber glass are older than the average Ne21 radiation age for bulk soil. Three clear glasses show an38 radiation age older than the average Ar38 radiation age for the bulk soil.en_US
dc.format.digitalOriginreformatted digitalen_US
dc.format.extent79 ppen_US
dc.identifier.callnoThesis SP.SCI. 1971 Allenen_US
dc.identifier.citationAllen, Sharon Cornelius. "Rare gas analysis of Apollo 11 glassy fragments." (1971) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/89819">https://hdl.handle.net/1911/89819</a>.en_US
dc.identifier.digitalRICE0852en_US
dc.identifier.urihttps://hdl.handle.net/1911/89819en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.titleRare gas analysis of Apollo 11 glassy fragmentsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentSpace Scienceen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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