First post-mortem analysis of deposits collected on ITER-like components in WEST after the C3 and C4 campaigns
نویسندگان
چکیده
In order to map the complex plasma footprint observed on lower divertor of WEST experiment after its first phase operation, we analysed deposits collected ITER-like Plasma Facing Units (PFUs) exposed in C3 (deuterium plasma) and C4 helium campaigns. Our results show that these have multilayer structures mainly composed tungsten, oxygen, boron carbon, whose texture composition vary along radial direction. These traits allowed us identify three types deposits: rich (conditioning) low flux area further away from strike point, tungsten with traces metallic compounds (Cu, Fe, Cr, Ni, Ag) high private area. addition, found more nanoparticles, voids oxide layers formed during comparison C3.
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ژورنال
عنوان ژورنال: Physica Scripta
سال: 2021
ISSN: ['1402-4896', '0031-8949']
DOI: https://doi.org/10.1088/1402-4896/ac267e