ITER relevant multi-emissive sheaths at normal magnetic field inclination

0583098 - ÚFP 2024 RIV US eng J - Článek v odborném periodiku
Tolias, P. - Komm, Michael - Ratynskaia, S. - Podolník, Aleš
ITER relevant multi-emissive sheaths at normal magnetic field inclination.
Nuclear Fusion. Roč. 63, č. 2 (2023), č. článku 026007. ISSN 0029-5515. E-ISSN 1741-4326
Grant CEP: GA MŠMT(CZ) EF16_013/0001551
GRANT EU: European Commission(BE) 101052200
Institucionální podpora: RVO:61389021
Klíčová slova: emissive sheath * escaping current density * macroscopic melt motion * Schottky effect * secondary electron emission * thermionic emission
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 3.3, rok: 2022
Způsob publikování: Open access
https://iopscience.iop.org/article/10.1088/1741-4326/acaabd

Reliable modeling of macroscopic melt motion induced by fast transients requires the accurate and computationally efficient description of the emitted current density that escapes to the pre-sheath. The ITER sheaths that surround hot tungsten surfaces during edge-localized modes are characterized by important contributions from secondary electron emission and electron backscattering as well as by the coupling between thermionic emission and field electron emission. Under the guidance of systematic particle-in-cell simulations that incorporate a comprehensive analytical electron emission model, a highly accurate semi-empirical treatment of the escaping electron current has been achieved.
Trvalý link: https://hdl.handle.net/11104/0351096


Vědecká data: Zenodo