TY - JOUR
T1 - MegaSIMS
T2 - a SIMS/AMS hybrid for measurement of the Sun's oxygen isotopic composition
AU - Mao, Peter H.
AU - Burnett, Donald S.
AU - Coath, Christopher D.
AU - Jarzebinski, George
AU - Kunihiro, Takuya
AU - McKeegan, Kevin D.
N1 - Funding Information:
Funding for this work was provided by the NASA Discovery Program as part of the Genesis Mission. Airlock design was courtesy of John Craven at the University of Edinburgh; engineering of the airlock and sample stage was carried out by Richard Plue.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2008/12/15
Y1 - 2008/12/15
N2 - 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.
AB - 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.
KW - Accelerator-based SIMS
KW - Oxygen isotopes
KW - Solar abundances
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U2 - 10.1016/j.apsusc.2008.05.175
DO - 10.1016/j.apsusc.2008.05.175
M3 - Article
AN - SCOPUS:56749088001
VL - 255
SP - 1461
EP - 1464
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
IS - 4
ER -