Simulation of diffusion of oxygen and uranium in uranium dioxide nanocrystals / Kupryazhkin A. Ya.,Zhiganov A. N.,Risovany D. V.,Nekrassov K. A.,Risovany V. D.,Golovanov V. N. // JOURNAL OF NUCLEAR MATERIALS. - 2008. - V. 372, l. 2-3. - P. 233-238.

ISSN/EISSN:

0022-3115 / нет данных

Type:

Article

Abstract:

The method of molecular dynamics is used to study phase transitions and ion transport phenomena in uranium dioxide nanocrystals. The temperature dependences of uranium and oxygen diffusion coefficients in the range from 2280 to 3950 K are calculated separately for surface, near-surface and bulk regions of the crystals. On these dependences we have distinguished temperature intervals, which correspond to crystalline phase, superionic state and melt. The activation energies of diffusion and pre-exponential factors for these intervals are determined. The obtained results are compared with experimental data and calculations of other authors. (C) 2007 Elsevier B.V. All rights reserved.

Author keywords:

UO2

DOI:

10.1016/j.jnucmat.2007.03.176

Web of Science ID:

ISI:000253180400010

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN 31
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	UO2
Research-Areas	Materials Science; Nuclear Science \& Technology
Web-of-Science-Categories	Materials Science, Multidisciplinary; Nuclear Science \& Technology
Author-Email	kupr@dpt.ustu.ru
Number-of-Cited-References	11
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	24
Journal-ISO	J. Nucl. Mater.
Doc-Delivery-Number	262XB