Rare gases in etched 10084 ilmenite - A search for trapped solar-flare rare gasesResults are presented of rare-gas analyses of 10084 ilmenite samples which have been etched to depths of about 1 micrometer in an attempt to remove the surface layer of trapped solar-wind gases, thereby allowing detection of the more deeply implanted solar-flare ions in the remaining trapped gases. A tendency found for the Ne-20/Ne-22 ratios in the etched ilmenite to reflect the solar-wind ratio measured in the solar-wind composition experiment foils may represent a cancellation of mass-fractionation effects. The Ne-20/Ne-22 ratio in the saturated layer is lowered with respect to the solar wind by preferential diffusive loss, but is raised again in the gas diffusing inward by the same preferential mobilization of Ne-20 relative to Ne-22. Attention is also given to the significance of the findings in the case of argon, krypton, and xenon.
Document ID
19780062811
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Leich, D. A. (California Univ. Berkeley, CA, United States)
Niemeyer, S. (California Univ. Berkeley, CA, United States)
Rajan, R. S. (California Univ. Berkeley, CA, United States)
Srinivasan, B. (California, University Berkeley, Calif., United States)