Zobrazeno 1 - 10
of 766
pro vyhledávání: '"HURLEY, DAVID A."'
Autor:
Adnan, Saqeeb, Hua, Zilong, Upreti, Puspa, Ma, Hao, Nosal, Erika, Zhou, Shuxiang, Regmi, Sabin, Prusnick, Timothy A, Rickert, Karl, Gofryk, Krzysztof, Mann, J Matthew, Hurley, David H, Manley, Michael E, Khafizov, Marat
Vibrational and magnetic properties of single-crystal uranium-thorium dioxide (UxTh1-xO2) with a full range of 0
Externí odkaz:
http://arxiv.org/abs/2412.05448
Publikováno v:
Journal of Nuclear Materials 601 (2024) 155314
Defects can significantly degrade the thermal conductivity of ThO2, an advanced nuclear fuel material as well as a surrogate for other fluorite-structured materials. We investigate how point defects in ThO2 impact phonon mode-resolved thermal transpo
Externí odkaz:
http://arxiv.org/abs/2402.05325
Autor:
Zhou, Shuxiang, Xiao, Enda, Ma, Hao, Gofryk, Krzysztof, Jiang, Chao, Manley, Michael E., Hurley, David H., Marianetti, Chris A.
Computing thermal transport from first-principles in UO$_2$ is complicated due to the challenges associated with Mott physics. Here we use irreducible derivative approaches to compute the cubic and quartic phonon interactions in UO$_2$ from first-pri
Externí odkaz:
http://arxiv.org/abs/2310.09282
Autor:
Jin, Miaomiao, Miao, Jilang, Chen, Beihan, Khafizov, Marat, Zhang, Yongfeng, Hurley, David H.
Oxygen self-diffusion is key to understanding stoichiometry and defect structures in oxide nuclear fuels. Experimentally, low activation-barrier oxygen migration was found in ThO$_2$, a candidate nuclear fuel, possibly due to short-circuit diffusion
Externí odkaz:
http://arxiv.org/abs/2309.09952
The ultrafast dynamics of the antiferrodistortive (AFD) phase transition in perovskite SrTiO3 is monitored via time-domain Brillouin scattering. Using femtosecond optical pulses, we induce a thermally driven tetragonal-to-cubic structural transformat
Externí odkaz:
http://arxiv.org/abs/2309.03172
Autor:
Malakkal, Linu, Katre, Ankita, Zhou, Shuxiang, Jiang, Chao, Hurley, David H., Marianetti, Chris A., Khafizov, Marat
This work presents the first principles calculations of the lattice thermal conductivity degradation due to point defects in thorium dioxide using an alternative solution of the Pierels-Boltzmann transport equation. We have used the non-perturbative
Externí odkaz:
http://arxiv.org/abs/2308.08583
Autor:
Jin, Miaomiao, Miao, Jilang, Zhang, Yongfeng, Khafizov, Marat, Bawane, Kaustubh K., Kombaiah, Boopathy, Hurley, David H.
Unfaulting of Frank loops in irradiated fluoride oxides are of significance to microstructural evolution. However, the mechanisms have not been directly observed. To this end, we utilize molecular dynamics to reveal the atomistic details related to t
Externí odkaz:
http://arxiv.org/abs/2305.11127
Autor:
Hua, Zilong, Adnan, Saqeeb, Khanolkar, Amey R., Rickert, Karl, Turner, David B., Prusnick, Timothy A., Mann, J. Matthew, Hurley, David H., Khafizov, Marat, Dennett, Cody A.
In this work, the thermal transport properties of thorium dioxide (ThO$_2$, thoria) with low levels of substitutional uranium (U) doping are explored. We observe strong indications of resonant phonon scattering, an interaction between phonons and ele
Externí odkaz:
http://arxiv.org/abs/2303.01659
Autor:
Khanolkar, Amey, Wang, Yuzhou, Dennett, Cody A., Hua, Zilong, Mann, J. Matthew, Khafizov, Marat, Hurley, David H.
We report the adiabatic elastic constants of single-crystal thorium dioxide over a temperature range of 77 - 350 K. Time-domain Brillouin scattering (TDBS), an all-optical, non-contact picosecond ultrasonic technique, is used to generate and detect c
Externí odkaz:
http://arxiv.org/abs/2303.01539