3D particle-in-cell modeling of Langmuir probe effective collecting area in magnetized plasma

0490576 - ÚFP 2019 RIV GB eng J - Článek v odborném periodiku
Podolník, Aleš - Komm, Michael - Adámek, Jiří - Háček, Pavel - Krbec, J. - Dejarnac, Renaud - Gunn, J. P. - Pánek, Radomír
3D particle-in-cell modeling of Langmuir probe effective collecting area in magnetized plasma.
Plasma Physics and Controlled Fusion. Roč. 60, č. 8 (2018), č. článku 085008. ISSN 0741-3335. E-ISSN 1361-6587
Grant CEP: GA MŠMT(CZ) LM2015045; GA ČR(CZ) GA16-14228S; GA MŠMT(CZ) 8D15001
Institucionální podpora: RVO:61389021
Klíčová slova: Langmuir probe * PIC * particle-in-cell * SPICE3 * plasma density * LP * Li-BES * COMPASS
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 2.799, rok: 2018
http://iopscience.iop.org/article/10.1088/1361-6587/aac701

In this work, the influence of magnetic fields on the probe effective collecting area is studied by the means of fully 3D3V particle-in-cell model SPICE3. A parameter scan based on properties of scrape-off layer plasmas at COMPASS tokamak as well as a particular probe pin used on a horizontal reciprocating manipulator is performed. The results reveal that the presence of the probe head has a substantial effect on the outcome of the measurement as it forms a magnetic presheath at the probe location. An approximate formula for addressing the change of effective collecting area is presented and the data from the simulations are compared to measurements of COMPASS reciprocating probes and lithium beam emission spectroscopy
Trvalý link: http://hdl.handle.net/11104/0285228