The particle-in-cell (PIC) code EPOCH is used to simulate parametric decay instabilities (PDIs) converting a 105 GHz microwave X-mode pump wave into electrostatic daughter waves at the upper hybrid (UH) layer of a fusion plasma in 1D. The resulting fields are analyzed, identifying modes in f- and k-space, and estimating their spectral power as a function of pump wave intensity. Both linearly and nonlinearly converted modes are identified and their characteristics agree with literature. A dipole approximation employed in literature appears to be unjust.
|Journal||EPJ Web of Conferences|
|Number of pages||4|
|Publication status||Published - 2019|
|Event||20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating - Greifswald, Germany|
Duration: 14 May 2018 → 18 May 2018
|Workshop||20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating|
|Period||14/05/2018 → 18/05/2018|