Thermal energy transport in oxide nuclear fuel
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 …
seek solid fuels that must withstand unprecedented temperature and radiation extremes. In …
A review of surface damage/microstructures and their effects on hydrogen/helium retention in tungsten
YG Li, QR Zheng, LM Wei, CG Zhang, Z Zeng - Tungsten, 2020 - Springer
The change in surface damage/microstructures and its effects on the hydrogen (H)
isotope/helium (He) dynamic behavior are the key factors for investigating issues of tungsten …
isotope/helium (He) dynamic behavior are the key factors for investigating issues of tungsten …
Empirical and mechanistic transient fission gas release model for high-burnup LOCA conditions
In response to the nuclear industry desire to extend burnup beyond current licensing
practices, the US Nuclear Regulatory Commission (NRC) released a research information …
practices, the US Nuclear Regulatory Commission (NRC) released a research information …
On the origin of 'fuzz'formation in plasma-facing materials
Tungsten, the material used in the plasma-facing components (PFCs) of nuclear fusion
reactors, develops a fuzz-like surface morphology under typical reactor operating conditions …
reactors, develops a fuzz-like surface morphology under typical reactor operating conditions …
[HTML][HTML] Modeling mesoscale fission gas behavior in UO2 by directly coupling the phase field method to spatially resolved cluster dynamics
Fission gas release within uranium dioxide nuclear fuel occurs as gas atoms diffuse through
grains and arrive at grain boundary (GB) bubbles; these GB bubbles grow and interconnect …
grains and arrive at grain boundary (GB) bubbles; these GB bubbles grow and interconnect …
[HTML][HTML] Theoretical model of helium bubble growth and density in plasma-facing metals
We present a theoretically-motivated model of helium bubble density as a function of volume
for high-pressure helium bubbles in plasma-facing tungsten. The model is a good match to …
for high-pressure helium bubbles in plasma-facing tungsten. The model is a good match to …
[HTML][HTML] Helium aggregation and surface morphology near grain boundaries in plasma-facing tungsten
We conduct molecular dynamics simulations of helium in tungsten to study the interaction of
helium with grain boundaries. Model systems with grain boundary planes perpendicular to …
helium with grain boundaries. Model systems with grain boundary planes perpendicular to …
Helium flux effects on bubble growth and surface morphology in plasma-facing tungsten from large-scale molecular dynamics simulations
KD Hammond, IV Naeger, W Widanagamaachchi… - Nuclear …, 2019 - iopscience.iop.org
We investigate helium flux effects on helium transport and surface evolution in plasma-
facing tungsten using molecular dynamics. The simulations span two orders of magnitude …
facing tungsten using molecular dynamics. The simulations span two orders of magnitude …
[HTML][HTML] Equation of state for He bubbles in W and model of He bubble growth and bursting near W {100} surfaces derived from molecular dynamics simulations
Molecular dynamics (MD) simulations are performed to derive an equation of state (EOS) for
helium (He) bubbles in tungsten (W) and to study the growth of He bubbles under a W (100) …
helium (He) bubbles in tungsten (W) and to study the growth of He bubbles under a W (100) …
Behavior and properties of helium cavities in ductile-phase-toughened tungsten irradiated with He+ ions at an elevated temperature
Ductile-phase toughened tungsten (DPT W) composites have demonstrated a great
potential for plasma-facing components in fusion power systems. These materials can retain …
potential for plasma-facing components in fusion power systems. These materials can retain …