Zobrazeno 1 - 10
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pro vyhledávání: '"N. J. Foster"'
Autor:
A. T. Kearsley, Penelope J. Wozniakiewicz, N. J. Foster, John P. Bradley, Marc Fries, Mark J. Burchell, Hope A. Ishii, Mike J. Cole, Mark C. Price
Publikováno v:
Meteoritics & Planetary Science. 47:737-762
– The Stardust collector shows diverse aerogel track shapes created by impacts of cometary dust. Tracks have been classified into three broad types (A, B, and C), based on relative dimensions of the elongate “stylus” (in Type A “carrots”) a
Autor:
Penelope J. Wozniakiewicz, Philip A. Bland, Mark J. Burchell, N. J. Foster, Anton T. Kearsley, Mike J. Cole, Sara S. Russell
Publikováno v:
Meteoritics & Planetary Science. 44:1541-1559
The encounter between the Stardust spacecraft and particles from comet 81P/Wild 2 gave impacts at a relative velocity of 6.1 km s −1 and near perpendicular incidence to the collector surface. Such conditions are well within the performance limits o
Publikováno v:
Meteoritics & Planetary Science. 44:1407-1419
New model organic microparticles are used to assess the thermal ablation that occurs during aerogel capture at speeds from 1 to 6 km s^(-1). Commercial polystyrene particles (20 m diameter) were coated with an ultrathin 20 nm overlayer of an organic
Autor:
N. J. Foster, Nick Teslich, Mike J. Cole, G. A. Graham, Mark J. Burchell, Mark C. Price, Anton T. Kearsley, Penelope J. Wozniakiewicz
Publikováno v:
Meteoritics & Planetary Science. 44:1489-1509
New experimental results show that Stardust crater morphology is consistent with interpretation of many larger Wild 2 dust grains being aggregates, albeit most of low porosity and therefore relatively high density. The majority of large Stardust grai
Autor:
Mark J. Burchell, Penelope J. Wozniakiewicz, Anton T. Kearsley, Philip A. Bland, N. J. Foster, Mike J. Cole
Publikováno v:
EAS Publications Series. 41:395-398
We briefly summarise our ongoing efforts to evaluate the success of cometary particle capture by NASA's Stardust mission. We demonstrate the use of a variety of analysis techniques to investigate the state of preservation in laboratory analogues of t
Publikováno v:
Planetary and Space Science. 57:58-70
Capture of high-speed (hypervelocity) particles in aerogel at ambient temperatures of 175–763 K is reported. This extends previous work which has mostly focussed on conducting experiments at ambient laboratory temperatures, even though aerogels are
Publikováno v:
Meteoritics & Planetary Science. 43:135-142
Here we demonstrate the use of Raman spectroscopy techniques to identify mineral particle fragments after their impact into aluminum foil at ~6 km s?^(-1). Samples of six minerals (olivine, rhodonite, enstatite, diopside, wollastonite, and lizardite)
Autor:
James Carpenter, J. Alan Creighton, Ian A. Franchi, Henner Busemann, Mark J. Burchell, John Bridges, S J Gurman, Hitesh C. Changela, N. J. Foster
Publikováno v:
Meteoritics and Planetary Science.
We have used synchrotron Fe-XANES, XRS, micro Raman, and SEM-TEM analyses of Stardust track 41 slice and track 121 terminal area slices to identify Fe oxide (magnetite-hematite and amorphous oxide). Fe-Ti oxide, and V-rich chromite (Fe-Cr-V-Ti-Mn oxi
Publikováno v:
Journal of Materials Chemistry. 19:1433
A range of uniform, micrometer-sized poly(methyl methacrylate) latexes have been coated with ultrathin overlayers of polypyrrole from aqueous solution. Good control over the targeted conducting polymer overlayer thicknesses is achieved for a 1.19 µm
Autor:
N J Foster
Publikováno v:
BMJ. 2:1006-1006