Zobrazeno 1 - 10
of 294
pro vyhledávání: '"C. Stennett"'
Publikováno v:
Ceramics, Vol 6, Iss 3, Pp 1826-1839 (2023)
99Tc and 129I are two long-lived, highly soluble and mobile fission products that pose a long-term hazard. A proposed wasteform for the disposal of radio-iodine is iodovanadinite (Pb5(VO4)3I), an apatite-structured vanadate. In this investigation, a
Externí odkaz:
https://doaj.org/article/f27d491872bd4529a98c83aae0343ccf
Autor:
Malin C. Dixon Wilkins, Luke T. Townsend, Martin C. Stennett, Kristina O. Kvashnina, Claire L. Corkhill, Neil C. Hyatt
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)
Abstract ThTi2O6 derived compounds with the brannerite structure were designed, synthesised, and characterised with the aim of stabilising incorporation of U5+ or U6+, at dilute concentration. Appropriate charge compensation was targeted by co-substi
Externí odkaz:
https://doaj.org/article/2d75616f65b944a7a73ab6ad8aed329e
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:
Lewis R. Blackburn, Luke T. Townsend, Malin C. Dixon Wilkins, Toshiaki Ina, Merve Kuman, Shi-Kuan Sun, Amber R. Mason, Laura J. Gardner, Martin C. Stennett, Claire L. Corkhill, Neil C. Hyatt
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Indium (In) is a neutron absorbing additive that could feasibly be used to mitigate criticality in ceramic wasteforms containing Pu in the immobilised form, for which zirconolite (nominally CaZrTi2O7) is a candidate host phase. Herein, the s
Externí odkaz:
https://doaj.org/article/b3182a9d69c84f22bbe20d059f773ead
Autor:
Merve Kuman, Laura J. Gardner, Lewis R. Blackburn, Martin C. Stennett, Neil C. Hyatt, Claire L. Corkhill
Publikováno v:
Ceramics, Vol 6, Iss 1, Pp 707-716 (2023)
Zirconolite is a candidate ceramic wasteform under consideration for the immobilisation of the UK civil PuO2 inventory. In the present work, a baseline dual-substituted zirconolite with the target composition (Ca0.783Gd0.017Ce0.2)(Zr0.883Gd0.017Ce0.1
Externí odkaz:
https://doaj.org/article/47915e725beb4251a06f83480312eca2
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:
Hannah Smith, Luke T. Townsend, Ritesh Mohun, Théo Cordara, Martin C. Stennett, J. Frederick W. Mosselmans, Kristina Kvashnina, Claire L. Corkhill
Publikováno v:
Communications Chemistry, Vol 5, Iss 1, Pp 1-8 (2022)
Chromia is an important additive used in uranium dioxide fuel fabrication, but its incorporation mechanism is still not fully understood. Here, the authors use X-ray absorption spectroscopy, including both near edge and extended fine structure region
Externí odkaz:
https://doaj.org/article/5b4c2b5fb11f44c1bad0303d938e60aa
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