Have you ever conducted experiments related to plasma turbulence control in magnetized plasmas? If so, can you provide details?

Sample interview questions: Have you ever conducted experiments related to plasma turbulence control in magnetized plasmas? If so, can you provide details?

Sample answer:

Yes, I have conducted experiments related to plasma turbulence control in magnetized plasmas. Here are some details:

  1. Experimental Setup:
  2. We employed a linear magnetized plasma device with dimensions of 10 m in length and 1 m in diameter.
  3. The plasma was generated using an electron cyclotron resonance (ECR) plasma source.
  4. A strong magnetic field (up to 1 Tesla) was applied along the axis of the device.

  5. Diagnostics:

  6. We used various diagnostics to measure plasma parameters and turbulence characteristics:

    • Langmuir probes for measuring plasma density and electron temperature.
    • Microwave reflectometry for measuring electron density profiles.
    • Fast-framing cameras for visualizing plasma turbulence.
    • Spectrometers for measuring spectral characteristics of plasma emissions.
  7. Experimental Procedure:

  8. We generated a magnetized plasma in the device and then excited plasma turbulence by injecting a small amount of neutral gas.
  9. We varied plasma parameters such as density, temperature, and magnetic field strength to study their effects on turbulence behavior.
  10. We also applied various control techniques to mitigate turbulence, including:

    • Injection of energetic electrons using electron cyclotron resonance heating (ECRH)
    • Modulation of the magnetic field using a rotating magnetic field (RMF)
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    Source: https://hireabo.com/job/5_0_9/Plasma%20Physicist

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