Computer Science
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ssrv..130..309h&link_type=abstract
Space Science Reviews, Volume 130, Issue 1-4, pp. 309-316
Computer Science
7
Solar Wind, Noble Gases, Genesis Oxygen Isotopic Analysis, Uv Laser Ablation
Scientific paper
The concentrator on Genesis provided samples of increased fluences of solar wind ions for precise determination of the oxygen isotopic composition. The concentration process caused mass fractionation as a function of the radial target position. This fractionation was measured using Ne released by UV laser ablation and compared with modelled Ne data, obtained from ion-trajectory simulations. Measured data show that the concentrator performed as expected and indicate a radially symmetric concentration process. Measured concentration factors are up to ˜30 at the target centre. The total range of isotopic fractionation along the target radius is 3.8%/amu, with monotonically decreasing 20Ne/22Ne towards the centre, which differs from model predictions. We discuss potential reasons and propose future attempts to overcome these disagreements.
Allton Judith H.
Baur Holger
Burnett Don S.
Heber Veronika S.
Olinger Chad T.
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