[HTML][HTML] Convective transport by intermittent blob-filaments: Comparison of theory and experiment

DA D'ippolito, JR Myra, SJ Zweben - Physics of Plasmas, 2011 - pubs.aip.org
A blob-filament (or simply “blob”) is a magnetic-field-aligned plasma structure which is
considerably denser than the surrounding background plasma and highly localized in the …

Tritium inventory in ITER plasma-facing materials and tritium removal procedures

J Roth, E Tsitrone, T Loarer, V Philipps… - Plasma Physics and …, 2008 - iopscience.iop.org
Interactions between the plasma and the vessel walls constitute a major engineering
problem for next step fusion devices, such as ITER, determining the choice of the plasma …

In-situ TEM observation of the response of ultrafine-and nanocrystalline-grained tungsten to extreme irradiation environments

O El-Atwani, JA Hinks, G Greaves, S Gonderman… - Scientific reports, 2014 - nature.com
The accumulation of defects and in particular He bubbles, can have significant implications
for the performance of materials exposed to the plasma in magnetic-confinement nuclear …

Helium bubble formation in ultrafine and nanocrystalline tungsten under different extreme conditions

O El-Atwani, K Hattar, JA Hinks, G Greaves… - Journal of Nuclear …, 2015 - Elsevier
We have investigated the effects of helium ion irradiation energy and sample temperature on
the performance of grain boundaries as helium sinks in ultrafine grained and nanocrystalline …

Principal physics developments evaluated in the ITER design review

RJ Hawryluk, DJ Campbell, G Janeschitz… - Nuclear …, 2009 - iopscience.iop.org
As part of the ITER Design Review and in response to the issues identified by the Science
and Technology Advisory Committee, the ITER physics requirements were reviewed and as …

Grain size threshold for enhanced irradiation resistance in nanocrystalline and ultrafine tungsten

O El-Atwani, JA Hinks, G Greaves… - Materials Research …, 2017 - Taylor & Francis
Nanocrystalline metals are considered highly radiation-resistant materials due to their large
grain boundary areas. Here, the existence of a grain size threshold for enhanced irradiation …

Ultrafine tungsten as a plasma-facing component in fusion devices: effect of high flux, high fluence low energy helium irradiation

O El-Atwani, S Gonderman, M Efe… - Nuclear …, 2014 - iopscience.iop.org
This work discusses the response of ultrafine-grained tungsten materials to high-flux, high-
fluence, low energy pure He irradiation. Ultrafine-grained tungsten samples were exposed …

The snowflake divertor

DD Ryutov, VA Soukhanovskii - Physics of Plasmas, 2015 - pubs.aip.org
The snowflake magnetic configuration is characterized by the presence of two closely
spaced poloidal field nulls that create a characteristic hexagonal (reminiscent of a …

Cross-field and parallel dynamics of SOL filaments in TCV

N Offeddu, W Han, C Theiler, T Golfinopoulos… - Nuclear …, 2022 - iopscience.iop.org
Using recently installed scrape-off layer diagnostics on the tokamak à configuration variable,
we characterise the poloidal and parallel properties of turbulent filaments. We access both …

Stochastic modeling of intermittent scrape-off layer plasma fluctuations

OE Garcia - Physical review letters, 2012 - APS
Single-point measurements of fluctuations in the scrape-off layer of magnetized plasmas are
generally found to be dominated by large-amplitude bursts which are associated with radial …