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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 1,398 - 1,405 (8page)
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We use a molecular dynamics simulation to explore thermal transport in oxide nuclear fuels with pointdefects. The effect of vacancy and substitutional defects on the thermal conductivity of plutonium dioxideand uranium dioxide is investigated. It is found that the thermal conductivities of these fuels arereduced significantly by the presence of small amount of vacancy defects; 0.1% oxygen vacancy reducesthe thermal conductivity of plutonium dioxide by more than 10%. The missing of larger atoms has a moredetrimental impact on the thermal conductivity of actinide oxides. In uranium dioxide, for example, 0.1%uranium vacancies decrease the thermal conductivity by 24.6% while the same concentration of oxygenvacancies decreases the thermal conductivity by 19.4%. However, uranium substitution has a minimaleffect on the thermal conductivity; 1.0% uranium substitution decreases the thermal conductivity ofplutonium dioxide only by 1.5%.
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참고문헌 (42)
참고문헌 신청
Y. Lu / 2012 / Thermodynamic properties and structural stability of thorium dioxide / J. Phys. Condens. Matter 24(22):225801
P. Martin / 2012 / A molecular dynamics study of the thermal properties of thorium oxide / J. Appl. Phys 112(7):073507
T. Arima / 2005 / Evaluation of thermal properties of UO2 and PuO2 by equilibrium molecular dynamics simulations from 300 to 2000 K / J. Alloy. Comp 400(1-2):43~50
L. Ma / 2012 / Formation energies and swelling of uranium dioxide by point defects / Phys. Lett 376(17):1499~1505
T. Petit / 1998 / Point defects in uranium dioxide / Phil. Mag. B 77(3):779~786
P. Martin / 2012 / A molecular dynamics study of the thermal properties of thorium oxide / J. Appl. Phys 112(7):073507
T. Arima / 2005 / Evaluation of thermal properties of UO2 and PuO2 by equilibrium molecular dynamics simulations from 300 to 2000 K / J. Alloy. Comp 400(1-2):43~50
L. Ma / 2012 / Formation energies and swelling of uranium dioxide by point defects / Phys. Lett 376(17):1499~1505
T. Petit / 1998 / Point defects in uranium dioxide / Phil. Mag. B 77(3):779~786
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