Zobrazeno 1 - 10
of 15
pro vyhledávání: '"D. S. Woolum"'
Autor:
Amy E. Hofmann, George R. Rossman, A. J. G. Jurewicz, Yunbin Guan, Chi Ma, D. S. Woolum, Donald S. Burnett, Julie M. Paque
Publikováno v:
Geostand Geoanal Res
Electron probe microanalyzer measurements of trace elements with high accuracy are challenging. Accurate Al measurements in olivine are required to calibrate SIMS implant reference materials for measurement of Al in the solar wind. We adopt a combine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a415db35383986a8379ad8d732557190
https://resolver.caltech.edu/CaltechAUTHORS:20200608-133209595
https://resolver.caltech.edu/CaltechAUTHORS:20200608-133209595
Publikováno v:
Meteoritics & Planetary Science
Solar abundances are important to planetary science since the prevalent model assumes that the composition of the solar photosphere is that of the solar nebula from which planetary materials formed. Thus, solar abundances are a baseline for planetary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::806c6672ec8236537b6a08893b420e1c
https://resolver.caltech.edu/CaltechAUTHORS:20190225-110316155
https://resolver.caltech.edu/CaltechAUTHORS:20190225-110316155
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
https://resolver.caltech.edu/CaltechAUTHORS:20171206-112123892
Autor:
Veronika S. Heber, Munir Humayun, D. S. Woolum, Larry R. Nittler, Yunbin Guan, Donald S. Burnett, A. J. G. Jurewicz, Richard L. Hervig, Jianhua Wang, Kevin D. McKeegan, Julie M. Paque
Ion microprobe elemental and isotopic determinations can be precise but difficult to quantify. Error is introduced when the reference material and the sample to be analysed have different compositions. Mitigation of such “matrix effects” is possi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6980e0deb01fd1863be110681d2d2c2d
https://resolver.caltech.edu/CaltechAUTHORS:20141111-093651164
https://resolver.caltech.edu/CaltechAUTHORS:20141111-093651164
Autor:
C. M. Hohenberg, Kunihiko Nishiizumi, Kevin D. McKeegan, Andrew J. Campbell, Robert O. Pepin, R. J. Hohlfelder, Rainer Wieler, Richard H. Becker, A. L. Butterworth, Charles C. Hays, Amy J. G. Jurewicz, D. S. Burnett, K. M. McNamara, Mitsuru Ebihara, Veronika S. Heber, Munir Humayun, T. A. Friedmann, A. P. Meshik, D. S. Woolum, Ian A. Franchi, Roger C. Wiens, J. A. Stone, D. J. Schlutter
Publikováno v:
Space Science Reviews. 105:535-560
Genesis (NASA Discovery Mission #5) is a sample return mission. Collectors comprised of ultra-high purity materials will be exposed to the solar wind and then returned to Earth for laboratory analysis. There is a suite of fifteen types of ultra-pure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9a4a5df53803f93ee134f1e70944a4d
https://doi.org/10.1023/a:1024469927444
https://doi.org/10.1023/a:1024469927444
Autor:
D. S. Woolum, Patrick Cassen
Publikováno v:
The Astrophysical Journal. 472:789-799
The redistribution of angular momentum and mass in circumstellar disks by spiral density waves is governed by processes that dissipate the waves. Dissipation is usually attributed to unspecified nonlinear processes or an ad hoc viscosity. In this pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdc398c4fd0e946e72a809c53ea6e616
https://doi.org/10.1086/178107
https://doi.org/10.1086/178107
Autor:
A. J. G. Jurewicz, D. S. Burnett, R. C. Wiens, T. A. Friedmann, C. C. Hays, R. J. Hohlfelder, K. Nishiizumi, J. A. Stone, D. S. Woolum, R. Becker, A. L. Butterworth, A. J. Campbell, M. Ebihara, I. A. Franchi, V. Heber, C. M. Hohenberg, M. Humayun, K. D. McKeegan, K. McNamara, A. Meshik, R. O. Pepin, D. Schlutter, R. Wieler
Publikováno v:
The Genesis Mission ISBN: 9789401039635
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aba4c4bf148ed0da6e1cedd5a5348c8c
https://doi.org/10.1007/978-94-010-0241-7_2
https://doi.org/10.1007/978-94-010-0241-7_2
Publikováno v:
Methods and Instrumentations: Results and Recent Developments ISBN: 9783642785283
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fb1c2fa7602ac5762522ff070947075
https://doi.org/10.1007/978-3-642-78526-9_5
https://doi.org/10.1007/978-3-642-78526-9_5
Autor:
D. S. Burnett, D. S. Woolum
Publikováno v:
Annual Review of Earth and Planetary Sciences. 11:329-358
We define in situ trace element microanalysis as the measurement of concentrations of trace elements (< 1000 ppm) in individual mineral phases in polished sections, analogous to electron microprobe analysis for major elements. It is our opinion that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53289699bed6b22feceb47568db3338f
https://doi.org/10.1146/annurev.ea.11.050183.001553
https://doi.org/10.1146/annurev.ea.11.050183.001553
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 22:376-379
Elemental abundances from Cl carbonaceous chondrite meteorites are thought to represent the average solar system (“cosmic”) composition, based on the agreement between Cl and solar photospheric abundances and on the smoothness of heavy element ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc9a4d4447a423a136c3ac4aaa3511c8
https://doi.org/10.1016/0168-583x(87)90362-4
https://doi.org/10.1016/0168-583x(87)90362-4