Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Lucy M. Mottram"'
Autor:
Shi-Kuan Sun, Lucy M. Mottram, Thomas Gouder, Martin C. Stennett, Neil C. Hyatt, Claire L. Corkhill
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023)
Abstract Crystal chemical design principles were applied to synthesise novel U4+ dominant and titanium excess betafite phases Ca1.15(5)U0.56(4)Zr0.17(2)Ti2.19(2)O7 and Ca1.10(4)U0.68(4)Zr0.15(3)Ti2.12(2)O7, in high yield (85–95 wt%), and ceramic de
Externí odkaz:
https://doaj.org/article/991437959466491890196b64733edc0f
Autor:
Antonia S. Yorkshire, Martin C. Stennett, Brant Walkley, John L. Provis, Luke T. Townsend, Latham T. Haigh, Neil C. Hyatt, Lucy M. Mottram, Claire L. Corkhill
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract Portland cement-based grouts used for radioactive waste immobilisation contain a Ca- and Si-rich binder phase, known as calcium–silicate–hydrate (C–S–H). Depending on the blend of cement used, the Ca/Si ratio can vary considerably. A
Externí odkaz:
https://doaj.org/article/87781ae8b6d946e8a43fe0550b6e4db5
Autor:
Claire L. Corkhill, Colleen Mann, Jeremy R. Eskelsen, Donovan N. Leonard, Lucy M. Mottram, Martin C. Stennett, Jennifer M. S. Ayling, Clare L. Thorpe, Max R. Cole, Sarah Nicholas, Ryan Tappero, Eric M. Pierce
Publikováno v:
npj Materials Degradation, Vol 6, Iss 1, Pp 1-14 (2022)
Abstract The corrosion mechanisms and kinetics of a Mg-rich alkali aluminoborosilicate glass simulating UK high-level waste (CaZn28) were investigated upon dissolution in synthetic cement solutions. Dissolution varied as a function the different pH a
Externí odkaz:
https://doaj.org/article/bc5e488ee3cd4595a4f876cc25d723c5
Autor:
Hao Ding, Clémence Gausse, Malin C. Dixon Wilkins, Lucy M. Mottram, Martin C. Stennett, Daniel Grolimund, Ryan Tappero, Sarah Nicholas, Shikuan Sun, Tomooki Shiba, C. Paraskevoulakos, Neil C. Hyatt, Claire L. Corkhill
Publikováno v:
npj Materials Degradation, Vol 6, Iss 1, Pp 1-13 (2022)
Abstract The Fukushima Daiichi accident generated degraded nuclear fuel material, mixed with other reactor components, known as molten core-concrete interaction (MCCI) material. Simulant MCCI material was synthesised, excluding highly radioactive fis
Externí odkaz:
https://doaj.org/article/2045880176404af0a33bb53e93dc10e2
Autor:
Antonia S. Yorkshire, Martin C. Stennett, Brant Walkley, Sarah E. O'Sullivan, Lucy M. Mottram, Daniel J. Bailey, John L. Provis, Neil C. Hyatt, Claire L. Corkhill
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 1, Pp 89-102 (2022)
Portland cement based grouts used for radioactive waste immobilization contain high replacement levels of supplementary cementitious materials, including blast-furnace slag and fly ash. The minerals formed upon hydration of these cements may have cap
Externí odkaz:
https://doaj.org/article/1fdb9324efb943f4b37fa81702435d95
Autor:
Marco E. Seddon-Ferretti, Lucy M. Mottram, Martin C. Stennett, Claire L. Corkhill, Neil C. Hyatt
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 1, Pp 276-279 (2022)
HERMES, a graphical user interface software tool, is presented, for pre-processing X-ray absorption spectroscopy (XAS) data from laboratory Rowland circle spectrometers, to meet the data handling needs of a growing community of practice. HERMES enabl
Externí odkaz:
https://doaj.org/article/b3bc6ddef25e4d1a8006dd3e45a8d10c
Autor:
Ryan Tappero, Daniel Grolimund, Neil C. Hyatt, Sarah Nicholas, Claire L. Corkhill, M.C. Dixon Wilkins, Lucy M. Mottram, Hao Ding, Shi-Kuan Sun, Lewis R. Blackburn
Publikováno v:
Journal of Synchrotron Radiation
This work elaborates and evaluates approaches to the construction of 2D speciation maps, in an effort to maximize sensitivity to the U oxidation state at the U L 3-edge, applied to a suite of synthetic Chernobyl lava specimens.
Uranium speciatio
Uranium speciatio
Publikováno v:
Journal of Rare Earths. 39:596-599
The solid state synthesis of the phase “Ce3NbO7+δ”, from stoichiometric quantities of CeO2 and Nb2O5, was investigated under air atmosphere, as previously described by Zhang et al. (Journal of Rare Earths, 2007, 25, 730–733). A combination of
Autor:
Shi-Kuan Sun, Malin C. Dixon Wilkins, Daniel Grolimund, Hao Ding, Neil C. Hyatt, Martin C. Stennett, Clémence Gausse, Sarah Nicholas, Ryan Tappero, Claire L. Corkhill, Lucy M. Mottram
Publikováno v:
Journal of Materials Chemistry A. 9:12612-12622
Detailed chemical analysis of the solidified molten fuel still residing in the stricken Chernobyl reactor unit 4 are inferred using multi-modal micro-focus X-ray analysis of a low-radioactivity proxy. A fascinating mixture of molten UO2, nuclear fuel
Autor:
Martin C. Stennett, Lucy M. Mottram, Paul A. Bingham, Alex Scrimshire, Neil C. Hyatt, John S. McCloy, Mostafa Ahmadzadeh
Publikováno v:
American Mineralogist. 105:1375-1384
The crystallization of iron-containing sodium silicate phases holds particular importance, both in the management of high-level nuclear wastes and in geosciences. Here, we study three as-quenched glasses and their heat-treated chemical analogs, NaFeS