Výsledky vyhledávání - "Jeffery J. Roberts"

Connectivity of core forming melts: Experimental constraints from electrical conductivity and X-ray tomography

Autor: Heather C. Watson, Jeffery J. Roberts

Publikováno v: Physics of the Earth and Planetary Interiors. 186:172-182

The formation of a metallic core is one of the most profound events in the early evolution of a planet. Although there is much evidence that favors a very hot and deep magma ocean for the major core formation event on Earth, many smaller planetesimal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07ae0dea8179b73725b478949c44579e
https://doi.org/10.1016/j.pepi.2011.03.009

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In situ high-pressure and high-temperature X-ray microtomographic imaging during large deformation: A new technique for studying mechanical behavior of multiphase composites

Autor: François Guyot, Jeffery J. Roberts, Julien Siebert, Yanbin Wang, S. J. Gaudio, Nicolas Menguy, Norimasa Nishiyama, Guillaume Morard, Mark L. Rivers, A. N. Clark, Charles E. Lesher, Guillaume Fiquet, Heather C. Watson

Publikováno v: geological society of america
geological society of america, 2011, pp.1. ⟨10.1130/GES00560.1⟩

International audience; microstructural evolution of a two-phase composite (olivine + Fe-Ni-S) during large shear deformation, using a newly developed high-pressure X-ray tomography microscope. Two samples were examined: a load-bearing framework-type

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da2369704675368690d876c7356495be
https://doi.org/10.1130/ges00560.1

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Scintillators With Potential to Supersede Lanthanum Bromide

Autor: Arnold Burger, Joshua D. Kuntz, Rastgo Hawrami, Nerine J. Cherepy, Robert D. Sanner, Jeffery J. Roberts, Siddha Pimputkar, Utpal N. Roy, T. Niedermayr, Kanai S. Shah, W.W. Moses, G. Hull, E.V.D. van Loef, Cody M. Wilson, Thomas M. Tillotson, Lynn A. Boatner, Stephen A. Payne, Woon-Seng Choong, S.J. Asztalos

Publikováno v: IEEE Transactions on Nuclear Science. 56:873-880

New scintillators for high-resolution gamma ray spectroscopy have been identified, grown and characterized. Our development efforts have focused on two classes of high-light-yield materials: europium-doped alkaline earth halides and cerium-doped garn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0dfbf0caf0009d6271c2511f041bebf5
https://doi.org/10.1109/tns.2009.2020165

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Pore structure of volcanic clasts: Measurements of permeability and electrical conductivity

Autor: Jeffery J. Roberts, Heather M. N. Wright, Katharine V. Cashman, Emily H. Gottesfeld

Publikováno v: Earth and Planetary Science Letters. 280:93-104

The pore structure of volcanic clasts is examined using measurements of porosity, permeability, and electrical properties. Permeability varies by several orders of magnitude among volcanic clasts and does not depend solely upon porosity. Electrical p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4fa5e9691ee7ec3205f73807169d225
https://doi.org/10.1016/j.epsl.2009.01.023

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Multiple synthesis routes to transparent ceramic lutetium aluminum garnet

Autor: Joshua D. Kuntz, Nerine J. Cherepy, Meghan Hough, Jeffery J. Roberts

Publikováno v: Scripta Materialia. 57:960-963

Transparent ceramics may be fabricated using various material sources and processing routes. In an effort to identify key processing parameters, we explored two different particle processing methods for production of ceramic lutetium aluminum garnet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::690ad953f4aa0a61348b61f7f3932e41
https://doi.org/10.1016/j.scriptamat.2007.07.017

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