Pulsation effects of incident ion energy on W fuzz growth

S Kajita, S Kawaguchi, D Hwangbo… - Plasma and Fusion …, 2018 - jstage.jst.go.jp
… We investigated pulsation effect in the incident energy of He ions on W fuzz growth. It is
shown that … In this study, we will investigate the effect of cyclic pulsation in Ei on W fuzz growth. …

Transient heating effects on tungsten: Ablation of Be layers and enhanced fuzz growth

JH Yu, MJ Baldwin, RP Doerner, T Dittmar… - Journal of Nuclear …, 2015 - Elsevier
fuzz caused fuzz erosion [3] as well as fuzz to be reintegrated back into the bulk [4], [5]. Here
we show the first results of W fuzz growth … step-wise fashion at each heating pulse. However, …

[HTML][HTML] Initial growth phase of W-fuzz formation in ultra-long pulse helium discharge in LHD

M Tokitani, S Masuzaki, H Kasahara… - Nuclear Materials and …, 2017 - Elsevier
… initial growth phase of tungsten fiberform nanostructure (W-fuzz) was able to be identified on
the tungsten surface. The finest initial growth phase of the W-fuzz … of the W-fuzz growth and …

Panorama of “fuzzgrowth on tungsten surface under He irradiation

WW Zhang, PH Shi, BD Yao, L Wu, XY Wu, LQ Shi… - Applied Surface …, 2021 - Elsevier
… for the fuzz growth is required with subsequent attainment of a panorama of “fuzzgrowth. An
in… process, we illustrated the growth of the nanostructured layers that grow away from the W …

[PDF][PDF] Comparison of tungsten fuzz growth in Alcator C-Mod and linear plasma devices

GM Wright - Bulletin of the American Physical Society, 2012 - researchgate.net
… between tokamak plasmas and linear device plasmas prevent fuzz growth in a tokamak? …
Fuzz layer Is the empirical growth rate determined on PISCES applicable to the fuzz grown …

Onset of fuzz formation in plasma-facing tungsten as a surface morphological instability

CS Chen, D Dasgupta, RD Kolasinski, BD Wirth… - Physical Review …, 2021 - APS
… for surface nanotendril growth with experimental measurements of fuzz layer growth on the
growth measurements at the early stages of fuzz growth, further establishing the onset of fuzz

[HTML][HTML] Tungsten fuzz: Deposition effects and influence to fusion devices

S Kajita, N Yoshida, N Ohno - Nuclear Materials and Energy, 2020 - Elsevier
… Although the fuzz growth condition and growth rate have … He ions can change the He effect
significantly. For example, the … heat pulse have shown that there was a threshold in the pulse

He-ion induced surface morphology change and nanofuzz growth on hot tungsten surfaces

FW Meyer - Journal of Physics B: Atomic, Molecular and Optical …, 2018 - iopscience.iop.org
… thickness could be obtained by invoking purely stochastic processes, the observed temperature
dependence of fuzz growth appears to favor the idea that fuzz growth is diffusion driven. …

An equilibrium model for tungsten fuzz in an eroding plasma environment

RP Doerner, MJ Baldwin, PC Stangeby - Nuclear Fusion, 2011 - iopscience.iop.org
… −2 s −1 ), the fuzz growth rate exhibits an Arrhenius dependence on the surface … relative
to solid W were assumed in the modelling of the effect of sub-ms laser pulse irradiation (to …

Dynamics of the changes in the parameters of the arc plasma during the destruction of a helium-induced tungsten fuzz by arc pulses

SA Barengolts, D Hwangbo, S Kajita, N Ohno… - Nuclear …, 2020 - iopscience.iop.org
… However, preliminary estimates support the possibility of fuzz … operation would meet the
conditions for fuzz growth [12, 18, … the largest fuzz thickness (sample 4) at the 10th pulse is due …