Abstract
Strong scattering during electron cyclotron resonance heating (ECRH) experiments in several magnetically confined fusion devices has been attributed to parametric decay instabilities (PDIs). Analytical modeling has shown that a non-monotonic density profile and excitation of trapped waves through two plasmon decay (TPD) play an important role. Using a particle-in-cell (PIC) code, decay of an X-mode wave into waves trapped inside a non-monotonic density profile is observed. The time evolution and composition of the daughter waves are investigated for different density profiles. A build up of the TPD daughter waves is only observed when they are supported by the plasma.
| Original language | English |
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| Publication date | 2019 |
| Number of pages | 4 |
| Publication status | Published - 2019 |
| Event | 46th EPS Conference on Plasma Physics - Milan, Italy Duration: 8 Jul 2019 → 12 Sept 2019 |
Conference
| Conference | 46th EPS Conference on Plasma Physics |
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| Country/Territory | Italy |
| City | Milan |
| Period | 08/07/2019 → 12/09/2019 |