MegaSIMS: a SIMS/AMS hybrid for measurement of the Sun's oxygen isotopic composition

Peter H. Mao; Donald S. Burnett; Christopher D. Coath; George Jarzebinski; Takuya Kunihiro; Kevin D. McKeegan

doi:10.1016/j.apsusc.2008.05.175

MegaSIMS: a SIMS/AMS hybrid for measurement of the Sun's oxygen isotopic composition

Peter H. Mao, Donald S. Burnett, Christopher D. Coath, George Jarzebinski, Takuya Kunihiro, Kevin D. McKeegan

Institute for Planetary Materials

Research output: Contribution to journal › Article

12 Citations (Scopus)

Abstract

One of the primary objectives of the Genesis sample return mission is to measure the oxygen isotopic composition of the Sun to permil-level precision. The returned samples pose a unique analytical challenge, and around the world, there has been parallel development of several competing techniques to make the oxygen measurement on the Genesis concentrator samples. At UCLA, we have developed a hybrid instrument: a secondary ion mass spectrometer (SIMS) front-end combined with an accelerator mass spectrometer (AMS), whose purpose is to eliminate molecular interferences via dissociation. We describe here the current status of the development of the instrument and the remaining issues to address before we request the Genesis samples for analysis.

Original language	English
Pages (from-to)	1461-1464
Number of pages	4
Journal	Applied Surface Science
Volume	255
Issue number	4
DOIs	https://doi.org/10.1016/j.apsusc.2008.05.175
Publication status	Published - Dec 15 2008

Keywords

Accelerator-based SIMS
Oxygen isotopes
Solar abundances

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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Mao, P. H., Burnett, D. S., Coath, C. D., Jarzebinski, G., Kunihiro, T., & McKeegan, K. D. (2008). MegaSIMS: a SIMS/AMS hybrid for measurement of the Sun's oxygen isotopic composition. Applied Surface Science, 255(4), 1461-1464. https://doi.org/10.1016/j.apsusc.2008.05.175

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AU - Kunihiro, Takuya

AU - McKeegan, Kevin D.

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