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Hydrogen fluence in Genesis collectors: Implications for acceleration of solar wind and for solar metallicity

Huss, Gary R. and Koeman‐Shields, Elizabeth and Jurewicz, Amy J. G. and Burnett, Donald S. and Nagashima, Kazuhide and Ogliore, Ryan and Olinger, Chad T. (2020) Hydrogen fluence in Genesis collectors: Implications for acceleration of solar wind and for solar metallicity. Meteoritics and Planetary Science, 55 (2). pp. 326-351. ISSN 1086-9379. PMCID PMC7120949. https://resolver.caltech.edu/CaltechAUTHORS:20200103-091227050

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Abstract

NASA's Genesis mission was flown to capture samples of the solar wind and return them to the Earth for measurement. The purpose of the mission was to determine the chemical and isotopic composition of the Sun with significantly better precision than known before. Abundance data are now available for noble gases, magnesium, sodium, calcium, potassium, aluminum, chromium, iron, and other elements. Here, we report abundance data for hydrogen in four solar wind regimes collected by the Genesis mission (bulk solar wind, interstream low‐energy wind, coronal hole high‐energy wind, and coronal mass ejections). The mission was not designed to collect hydrogen, and in order to measure it, we had to overcome a variety of technical problems, as described herein. The relative hydrogen fluences among the four regimes should be accurate to better than ±5–6%, and the absolute fluences should be accurate to ±10%. We use the data to investigate elemental fractionations due to the first ionization potential during acceleration of the solar wind. We also use our data, combined with regime data for neon and argon, to estimate the solar neon and argon abundances, elements that cannot be measured spectroscopically in the solar photosphere.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1111/maps.13420DOIArticle
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7120949PubMed CentralArticle
ORCID:
AuthorORCID
Huss, Gary R.0000-0003-4281-7839
Jurewicz, Amy J. G.0000-0002-3282-5782
Burnett, Donald S.0000-0001-9521-8675
Ogliore, Ryan0000-0001-8165-6252
Olinger, Chad T.0000-0002-9509-6345
Additional Information:© 2019 The Meteoritical Society. Received 05 November 2018; revision accepted 26 October 2019. We thank the Genesis curatorial facility at JSC for working with us to get the right samples for this work. The paper benefited from a thoughtful review by Martin Laming. Supported by NASA grants NNX09AC32G, NNX14AF25G, and NNX17AE73G to G.R.H. and NNX09AC35G, NNX14AF26G, and 80NSSC17K0025 to D.S.B.
Funders:
Funding AgencyGrant Number
NASANNX09AC32G
NASANNX14AF25G
NASANNX17AE73G
NASANNX09AC35G
NASANNX14AF26G
NASA80NSSC17K0025
Issue or Number:2
PubMed Central ID:PMC7120949
Record Number:CaltechAUTHORS:20200103-091227050
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200103-091227050
Official Citation:Huss, G.R., Koeman‐Shields, E., Jurewicz, A.J.G., Burnett, D.S., Nagashima, K., Ogliore, R. and Olinger, C.T. (2020), Hydrogen fluence in Genesis collectors: Implications for acceleration of solar wind and for solar metallicity. Meteorit Planet Sci, 55: 326-351. doi:10.1111/maps.13420
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100484
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:05 Jan 2020 03:49
Last Modified:06 Apr 2020 18:37

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