Search Results - "Begg, B.D."

Defects and threshold displacement energies in SrTiO3 perovskite using atomistic computer simulations by Thomas, B.S., Marks, N.A., Begg, B.D.

“…The mode and energy of simple defect incorporation in SrTiO3 (vacancies and interstitials) is quantified using computer simulation techniques with an empirical…”
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Heavy-ion irradiation effects in Gd2(Ti2-xZrx)O7 pyrochlores by BEGG, B. D, HESS, N. J, MCCREADY, D. E, THEVUTHASAN, S, WEBER, W. J

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Heavy-ion irradiation effects on structures and acid dissolution of pyrochlores by Begg, B.D, Hess, N.J, Weber, W.J, Devanathan, R, Icenhower, J.P, Thevuthasan, S, McGrail, B.P

“…The temperature dependence of the critical dose for amorphization, using 0.6 MeV Bi + ions, for A 2Ti 2O 7 pyrochlores, in which A=Y, Sm, Gd and Lu, exhibits…”
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Heavy-ion irradiation effects in Gd 2(Ti 2− xZr x)O 7 pyrochlores by Begg, B.D, Hess, N.J, McCready, D.E, Thevuthasan, S, Weber, W.J

“…Gd 2(Ti 2− x Zr x )O 7 samples with 0⩽ x⩽1.5 were single-phase and pyrochlore structured after sintering at 1600°C in air. The Gd 2Zr 2O 7 ( x=2) end member…”
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Radiation stability of gadolinium zirconate: A waste form for plutonium disposition by Wang, S. X., Begg, B. D., Wang, L. M., Ewing, R. C., Weber, W. J., Kutty, K. V. Govidan

“…Zirconate and titanate pyrochlores were subjected to 1 MeV of Kr+ irradiation. Pyrochlores in the Gd2(ZrxTi1-x)2O7 system (x = 0, 0.25, 0.5, 0.75, 1) showed a…”
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Developing pair potentials for simulating radiation damage in complex oxides by Thomas, B.S., Marks, N.A., Begg, B.D.

“…Atomistic simulation of radiation damage in oxides is a relatively new field compared to similar work in metals and semiconductors, and presents new…”
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Stainless steel/glass–ceramic interactions under hot isostatic pressing (HIPing) conditions by Zhang, Y., Li, H., McGlinn, P.J., Yang, B., Begg, B.D.

“…The interactions between stainless steel (SS) and a glass–ceramic designed for immobilisation of the high-level nuclear waste generated at the Idaho chemical…”
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Characterisation of stainless steel–synroc interactions under hot isostatic pressing (HIPing) conditions by Li, H., Zhang, Y., McGlinn, P.J., Moricca, S., Begg, B.D., Vance, E.R.

“…Stainless steel/synroc interactions under HIPing conditions (1280°C/100MPa/3 h) have been studied. The synroc material was based on the zirconolite-rich…”
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Immobilisation of 129I by encapsulation in tin by hot-pressing at 200 °C by Vance, E.R., Perera, D.S., Moricca, S., Aly, Z., Begg, B.D.

“…The volatility of iodine-129 and its soluble nature in anionic form makes it very difficult to incorporate in ceramic or glassy solids for the purpose of…”
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Structures in the System CaTiO3/SrTiO3 by Ball, C.J, Begg, B.D, Cookson, D.J, Thorogood, G.J, Vance, E.R

“…At room temperature the sequence of phases with increasing amounts of strontium in the system CaTiO3/SrTiO3is orthorhombic (Pnma), orthorhombic (Bmmb),…”
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The incorporation of plutonium and neptunium in zirconolite and perovskite by Begg, B.D, Vance, E.R, Conradson, S.D

“…The incorporation of Pu and Np in one zirconolite and a number of perovskite formulations has been investigated under oxidising and reducing conditions. The Pu…”
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Pu, U, and Hf Incorporation in Gd Silicate Apatite by Vance, Eric R., Ball, Clifford J., Begg, Bruce D., Carter, Melody L., Day, R. Arthur, Thorogood, Gordon J.

“…Trivalent Pu can be incorporated in the silicate apatite structure to form Ca2Pu8(SiO4)6O2 by sintering under reducing conditions, while the incorporation of…”
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XAS and XRD Study of Annealed {sup 238}Pu- and {sup 239}Pu-substituted Zircons (Zr{sub 0.92}Pu{sub 0.08}SiO{sub 4}) by Begg, B.D., Hess, N.J., Weber, W.J., Conradson, S.D., Schweiger, M.J., Ewing, R.C.

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Computer Simulation of Pu{sup 3+} and Pu{sup 4+} Substitutions in Zircon by Williford, R.E., Begg, B.D., Weber, W.J., Hess, N.J.

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Computer simulation of Pu3+ and pu4+ substitutions in zircon by WILLIFORD, R. E, BEGG, B. D, WEBER, W. J, HESS, N. J

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Computer simulation of Pu 3+ and Pu 4+ substitutions in zircon by Williford, R.E., Begg, B.D., Weber, W.J., Hess, N.J.

“…Energy minimization methods were used in atomistic computer simulations to determine the energetics of Pu 3+ and Pu 4+ substitutions and interstitials in…”
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Heavy-Ion Irradiation Effects on Structures and Acid Dissolution of Pyrochlores by Begg, B.D., Hess, N.J., Weber, W.J., Devanathan, R., Icenhower, J.P., Thevuthasan, S., McGrail, B.P.

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Charge Compensation in Gd-Doped CaTiO3 by Vance, E.R., Day, R.A., Zhang, Z., Begg, B.D., Ball, C.J., Blackford, M.G.

“…Ca(1−x)Gd(x)TiO3samples prepared by sintering in air at 1550°C exhibit a primary perovskite-structured solid solution forxup to about 0.2. It is concluded from…”
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Energy-recoil analysis of deuterium incorporated in Synroc by reaction with D 2O at 120 and 190°C [Comments on the paper by Hj. Matzke et al., Nucl. Instrum. Meth. B45 (1990) 194] by Dytlewski, N., Vance, E.R., Begg, B.D.

“…The use of D 2O for leaching Synroc gives increased sensitivity relative to H 2O in energy-recoil analysis of aqueous species in the leached surfaces. At 120…”
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Reply to “Does Lanthanide Substitution Reduce Titanium from Ti4+to Ti3+in the Perovskite CaTiO3Fired at 1550°C in Air?” by Vance, E.R., Day, R.A., Zhang, Z., Begg, B.D., Ball, C.J., Blackford, M.G.

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