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

0490576 - ÚFP 2019 RIV GB eng J - Journal Article
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
R&D Projects: GA MŠMT(CZ) LM2015045; GA ČR(CZ) GA16-14228S; GA MŠMT(CZ) 8D15001
Institutional support: RVO:61389021
Keywords : Langmuir probe * PIC * particle-in-cell * SPICE3 * plasma density * LP * Li-BES * COMPASS
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.799, year: 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
Permanent Link: http://hdl.handle.net/11104/0285228