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It is shown that with an oblique incidence of a pump microwave in X2-mode electron cyclotron plasma heating (ECRH) experiments, the threshold power of a parametric decay instability (PDI) leading… Click to show full abstract
It is shown that with an oblique incidence of a pump microwave in X2-mode electron cyclotron plasma heating (ECRH) experiments, the threshold power of a parametric decay instability (PDI) leading to excitation of two trapped upper hybrid waves increases and the anomalous absorption level decreases. It is proposed to use a small pump beam tilt along the magnetic field to suppress this most dangerous PDI, often observed in the X2-mode ECRH experiments.
Keywords:
oblique incidence;
decay instability;
pump;
pump beam;
parametric decay
Journal Title: Physics of Plasmas
Year Published: 2023
Link to full text (if available)
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Journal Title: Physics of Plasmas
Year Published: 2023
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!