113 citations · 397 across the 15 of their papers we have counts for
15 papers
Thermal conductivity suppression in uranium-doped thorium dioxide due to phonon resonant scattering
Zilong Hua, Saqeeb Adnan, Amey R. Khanolkar +7
In this work, the thermal transport properties of thorium dioxide (ThO, thoria) with low levels of substitutional uranium (U) doping are explored. We observe strong indications…
Temperature-dependent elastic constants of thorium dioxide probed using time-domain Brillouin scattering
Amey Khanolkar, Yuzhou Wang, Cody A. Dennett +4
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-con…
Thermal Energy Transport in Oxide Nuclear Fuel
David H. Hurley, Anter El-Azab, Matthew S. Bryan +13
To efficiently capture the energy of the nuclear bond, advanced nuclear reactor concepts seek solid fuels that must withstand unprecedented temperature and radiation extremes. In t…
Towards quantitative inference of nanoscale defects in irradiated metals and alloys
Charles A. Hirst, Cody A. Dennett
Quantifying the population of nanoscale defects that are formed in metals and alloys exposed to extreme radiation environments remains a pressing challenge in materials science. Th…
Advances in actinide thin films: synthesis, properties, and future directions
K. D. Vallejo, F. Kabir, N. Poudel +5
Actinide-based compounds exhibit unique physics due to the presence of 5f electrons, and serve in many cases as important technological materials. Targeted thin film synthesis of a…
The generalized quasiharmonic approximation via space group irreducible derivatives
Mark A. Mathis, Amey Khanolkar, Lyuwen Fu +9
The quasiharmonic approximation (QHA) is the simplest nontrivial approximation for interacting phonons under constant pressure, bringing the effects of anharmonicity into temperatu…
Validating First-Principles Phonon Lifetimes via Inelastic Neutron Scattering
Enda Xiao, Hao Ma, Matthew S. Bryan +10
Phonon lifetimes are a key component of quasiparticle theories of transport, yet first-principles lifetimes are rarely directly compared to inelastic neutron scattering (INS) resul…
Thermal conductivity reduction in (ZrTaNbTi)C high entropy carbide from extrinsic lattice defects
Cody A. Dennett, Zilong Hua, Eric Lang +2
High entropy carbides ceramics with randomly-distributed multiple principal cations have shown high temperature stability, low thermal conductivity, and possible radiation toleranc…
Thermal diffusivity recovery and defect annealing kinetics of self-ion implanted tungsten probed by insitu Transient Grating Spectroscopy
Abdallah Reza, Guanze He, Cody A. Dennett +3
Tungsten is a promising candidate material for plasma-facing armour components in future fusion reactors. A key concern is irradiation-induced degradation of its normally excellent…
The dynamic evolution of swelling in nickel concentrated solid solution alloys through in situ property monitoring
Cody A. Dennett, Benjamin R. Dacus, Christopher M. Barr +5
Defects and microstructural features spanning the atomic level to the microscale play deterministic roles in the expressed properties of materials. Yet studies of material evolutio…
Non-contact, non-destructive mapping of thermal diffusivity and surface acoustic wave speed using transient grating spectroscopy
Abdallah Reza, Cody A. Dennett, Michael P. Short +5
We present new developments of the laser-induced transient grating spectroscopy (TGS) technique that enable the measurement of large area 2D maps of thermal diffusivity and surface…
Transient grating spectroscopy: An ultrarapid, nondestructive materials evaluation technique
Felix Hofmann, Michael P. Short, Cody A. Dennett
Structure-property relationships are the foundation of materials science. Linking microstructure and material properties is essential for predicting material response to driving fo…
Conceptual design study for heat exhaust management in the ARC fusion pilot plant
A. Q. Kuang, N. M. Cao, A. J. Creely +13
The ARC pilot plant conceptual design study has been extended beyond its initial scope [B. N. Sorbom et al., FED 100 (2015) 378] to explore options for managing ~525 MW of fusion p…
In-Situ Measurements of the Secondary Electron Yield in an Accelerator Environment: Instrumentation and Methods
W. H. Hartung, D. M. Asner, J. V. Conway +8
The performance of a particle accelerator can be limited by the build-up of an electron cloud (EC) in the vacuum chamber. Secondary electron emission from the chamber walls can con…
Report on Instrumentation and Methods for In-Situ Measurements of the Secondary Electron Yield in an Accelerator Environment
W. H. Hartung, D. M. Asner, J. V. Conway +8
The achievable beam current and beam quality of a particle accelerator can be limited by the build-up of an electron cloud (EC) in the vacuum chamber. Secondary electron emission f…