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The Genesis Solar Wind Concentrator Target: Mass Fractionation Characterised by Neon Isotopes

Heber, V. S. and Wiens, R. C. and Reisenfeld, D. B. and Allton, J. H. and Baur, H. and Burnett, D. S. and Olinger, C. T. and Wiechert, U. and Wieler, R. (2007) The Genesis Solar Wind Concentrator Target: Mass Fractionation Characterised by Neon Isotopes. Space Science Reviews, 130 (1-4). pp. 309-316. ISSN 0038-6308. http://resolver.caltech.edu/CaltechAUTHORS:20130215-090220551

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Abstract

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 ^(20)Ne/^(22)Ne towards the centre, which differs from model predictions. We discuss potential reasons and propose future attempts to overcome these disagreements.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/s11214-007-9179-1DOIUNSPECIFIED
http://link.springer.com/article/10.1007%2Fs11214-007-9179-1PublisherUNSPECIFIED
Additional Information:© 2007 Springer Science+Business Media, Inc. Received: 22 December 2006; Accepted: 26 March 2007; Published online: 15 May 2007. We acknowledge the financial support by the Swiss National Science Foundation. We thank for the support by the NASA Discovery Mission Office.
Funders:
Funding AgencyGrant Number
Swiss National Science Foundation (SNSF)UNSPECIFIED
NASA Discovery Mission OfficeUNSPECIFIED
Subject Keywords:solar wind; noble gases; genesis oxygen isotopic analysis; UV laser ablation
Record Number:CaltechAUTHORS:20130215-090220551
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130215-090220551
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36941
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:19 Feb 2013 23:56
Last Modified:22 Nov 2013 20:14

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