Noble gas elemental abundances in three solar wind regimes as recorded by the Genesis mission

Autor: Rainer Wieler, Peter Bochsler, Nadia Vogel, Colin Maden, Veronika S. Heber, Donald S. Burnett

Publikováno v: Geochimica et Cosmochimica Acta. 263:182-194

We discuss elemental abundances of noble gases in targets exposed to the solar wind (SW) onboard the “Genesis” mission during the three different SW “regimes”: “Slow” (interstream, IS) wind, “Fast” (coronal hole, CH) wind and solar wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeb947f11e8981a56407cbcb42282f5f
https://doi.org/10.1016/j.gca.2019.08.007

Determining the Elemental and Isotopic Composition of the Pre-solar Nebula from Genesis Data Analysis: The Case of Oxygen

Autor: A. J. G. Jurewicz, Gary R. Huss, Richard L. Hervig, Jianhua Wang, J. Martin Laming, Larry R. Nittler, Veronika S. Heber, Yunbin Guan, Daniel B. Reisenfeld, K. D. Rieck, D. S. Burnett, Roger C. Wiens, D. S. Woolum, E. C. Koeman-Shields, Kevin D. McKeegan

Publikováno v: The astrophysical journal. Letters, vol 851, iss No 1

We compare element and isotopic fractionations measured in solar wind samples collected by NASA's Genesis mission with those predicted from models incorporating both the ponderomotive force in the chromosphere and conservation of the first adiabatic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f755c26da6c0e26e5ddd5a95545121b9
https://resolver.caltech.edu/CaltechAUTHORS:20171206-112123892

Helium in Earth’s early core

Autor: Veronika S. Heber, Simon P. Kelley, Andrew P. Jephcoat, Mohamed Ali Bouhifd

Publikováno v: Nature Geoscience
Nature Geoscience, Nature Publishing Group, 2013, 6, pp.982-986. ⟨10.1038/NGEO1959⟩
Nature Geoscience, 2013, 6, pp.982-986. ⟨10.1038/NGEO1959⟩

International audience; The observed escape of the primordial helium isotope, 3He, from the Earth's interior indicates that primordial helium survived the energetic process of planetary accretion and has been trapped within the Earth to the present d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1318fb39e31ec9ab71c2c701984020ea
https://doi.org/10.1038/ngeo1959

The Oxygen Isotopic Composition of the Sun Inferred from Captured Solar Wind

Autor: T. Kunihiro, Roger C. Wiens, G. Jarzebinski, Daniel B. Reisenfeld, D. S. Burnett, Ronald W. Moses, Apa Kallio, Kevin D. McKeegan, Christopher D. Coath, Peter H. Mao, Veronika S. Heber, Ajg Jurewicz, Jane E. Nordholt

Publikováno v: Science. 332:1528-1532

All planetary materials sampled thus far vary in their relative abundance of the major isotope of oxygen, ^(16)O, such that it has not been possible to define a primordial solar system composition. We measured the oxygen isotopic composition of solar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63a918753f8a9429716da974b75f982b
https://doi.org/10.1126/science.1204636

Isotopic and elemental fractionation of solar wind implanted in the Genesis concentrator target characterized and quantified by noble gases

Autor: Heinrich Baur, Nadia Vogel, Kevin D. McKeegan, A. J. G. Jurewicz, Rainer Wieler, Donald S. Burnett, Roger C. Wiens, Veronika S. Heber, Daniel B. Reisenfeld

Publikováno v: Meteoritics & Planetary Science. 46:493-512

We report concentrations and isotopic compositions of He, Ne, and Ar measured with high spatial resolution along a radial traverse of a silicon carbide (SiC) quadrant of the Genesis mission concentrator target. The Ne isotopic composition maps instru

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::344d0e6e18b355356e3fc03dc1d49436
https://doi.org/10.1111/j.1945-5100.2011.01170.x