Abstract
The behavior of the edge plasma near the grill mouth is investigated with a new tool in this context: the self-consistent particle-in-cell (PIC) code XPDP2 [V. Vahedi et al., Phys. Fluids B 5, 2719 (1993)].
The PIC simulations provide the key parameters of the problem: the absorbed power, the radial deposition profiles, and the energy spectrum of the accelerated particles close to the grill.
| Original language | English |
|---|---|
| Pages (from-to) | 2553-2559 |
| Journal | Physics of Plasmas |
| Volume | 5 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1998 |
| MoE publication type | A1 Journal article-refereed |
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Generation of hot spots by fast electrons in lower hybrid grills. / Rantamäki, Karin; Pättikangas, Timo; Karttunen, Seppo; Litaudon, X.; Moreau, D.; Litaudon, X; Moreau, D.
In: Physics of Plasmas, Vol. 5, No. 7, 1998, p. 2553-2559.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Generation of hot spots by fast electrons in lower hybrid grills
AU - Rantamäki, Karin
AU - Pättikangas, Timo
AU - Karttunen, Seppo
AU - Litaudon, X.
AU - Moreau, D.
AU - Litaudon, X
AU - Moreau, D
PY - 1998
Y1 - 1998
N2 - Generation of hot spots on plasma facing components magnetically connected to the grill is a main limiting factor in high-power operation of a lower hybrid system. A possible explanation for the hot spots is the sputtering caused by fast electrons generated by parasitic absorption of lower hybrid power near the grill mouth. The behavior of the edge plasma near the grill mouth is investigated with a new tool in this context: the self-consistent particle-in-cell (PIC) code XPDP2 [V. Vahedi et al., Phys. Fluids B 5, 2719 (1993)]. The PIC simulations provide the key parameters of the problem: the absorbed power, the radial deposition profiles, and the energy spectrum of the accelerated particles close to the grill.
AB - Generation of hot spots on plasma facing components magnetically connected to the grill is a main limiting factor in high-power operation of a lower hybrid system. A possible explanation for the hot spots is the sputtering caused by fast electrons generated by parasitic absorption of lower hybrid power near the grill mouth. The behavior of the edge plasma near the grill mouth is investigated with a new tool in this context: the self-consistent particle-in-cell (PIC) code XPDP2 [V. Vahedi et al., Phys. Fluids B 5, 2719 (1993)]. The PIC simulations provide the key parameters of the problem: the absorbed power, the radial deposition profiles, and the energy spectrum of the accelerated particles close to the grill.
U2 - 10.1063/1.872940
DO - 10.1063/1.872940
M3 - Article
VL - 5
SP - 2553
EP - 2559
JO - Physics of Plasmas
JF - Physics of Plasmas
SN - 1527-2419
IS - 7
ER -