Wiens, Roger C. and Neugebauer, Marcia and Reisenfeld, Daniel B. and Moses, Ronald W., Jr. (2003) Genesis solar wind concentrator: computer simulations of performance under solar wind conditions. Space Science Reviews, 105 (3-4). pp. 601-626. ISSN 0038-6308. doi:10.1023/A:1024474028352. https://resolver.caltech.edu/CaltechAUTHORS:20150506-101711130
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Abstract
The design and operation of the Genesis Solar-Wind Concentrator relies heavily on computer simulations. The computer model is described here, as well as the solar wind conditions used as simulation inputs, including oxygen charge state, velocity, thermal, and angular distributions. The simulation included effects such as ion backscattering losses, which also affect the mass fractionation of the instrument. Calculations were performed for oxygen, the principal element of interest, as well as for H and He. Ion fluences and oxygen mass fractionation are determined as a function of radius on the target. The results were used to verify that the instrument was indeed meeting its requirements, and will help prepare for distribution of the target samples upon return of the instrument to earth. The actual instrumental fractionation will be determined at that time by comparing solar-wind neon isotope ratios measured in passive collectors with neon in the Concentrator target, and by using a model similar to the one described here to extrapolate the instrumental fractionation to oxygen isotopes.
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| Additional Information: | © 2003 Kluwer Academic Publishers. Received 15 December 2001; Accepted in final form 22 May 2002. This work was carried out under NASA contract W-19,272. Thanks go to George Gloeckler and Thomas Zurbuchen and the respective instrument teams for making ACE and Ulysses SWICS data available. Many other people are to be thanked for their help in this work, including L. Adamic, S. Rupiper, M. Anderson, and D. Dahl. | |||||||||
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| Issue or Number: | 3-4 | |||||||||
| DOI: | 10.1023/A:1024474028352 | |||||||||
| Record Number: | CaltechAUTHORS:20150506-101711130 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150506-101711130 | |||||||||
| Official Citation: | Wiens, R., Neugebauer, M., Reisenfeld, D., Moses, R., Jr., Nordholt, J., & Burnett, D. (2003). Genesis Solar Wind Concentrator: Computer Simulations of Performance Under Solar Wind Conditions. Space Science Reviews, 105(3-4), 601-626. doi: 10.1023/a:1024474028352 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 57262 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | INVALID USER | |||||||||
| Deposited On: | 06 May 2015 23:26 | |||||||||
| Last Modified: | 10 Nov 2021 21:10 |
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