KD Hammond - Materials Research Express, 2017 - iopscience.iop.org
Tungsten, the primary material under consideration as the divertor material in magnetic- confinement nuclear fusion reactors, has been known for the last decade to form'fuzz'—a …
The growth process of He bubbles in W is investigated using molecular dynamics and parallel replica dynamics for growth rates spanning 6 orders of magnitude. Fast and slow …
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 …
We present atomistic simulations that show the effect of surface orientation on helium depth distributions and surface feature formation as a result of low-energy helium plasma …
We report the results of a systematic atomic-scale analysis of the dynamics of small mobile helium clusters in tungsten, near tungsten surfaces. These helium clusters are attracted to …
L Hu, KD Hammond, BD Wirth… - Journal of Applied Physics, 2014 - pubs.aip.org
We report results of atomistic computations for the interactions of small mobile helium clusters (Hen) with free surfaces and grain boundaries (GBs) in tungsten toward …
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 …
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 …