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Note: An approach to 1000 T using the electro-magnetic flux compression.

D Nakamura1, H Sawabe1, S Takeyama1

  • 1Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan.

The Review of Scientific Instruments
|February 3, 2018
PubMed
Summary
This summary is machine-generated.

Reducing the initial seed magnetic field in electromagnetic flux compression significantly boosts the final peak magnetic field. This technique achieved a record 985 T, approaching 1000 T, using optical Faraday rotation.

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Area of Science:

  • Physics
  • High Energy Physics
  • Plasma Physics

Background:

  • Electromagnetic flux compression is a method for generating extremely high magnetic fields.
  • Understanding the relationship between seed field and final field is crucial for optimizing this technique.
  • Previous experiments have explored various parameters influencing magnetic field generation.

Purpose of the Study:

  • To investigate the effect of the initial seed magnetic field on the maximum magnetic field generated by electromagnetic flux compression.
  • To achieve magnetic fields approaching 1000 T in a controlled laboratory setting.
  • To validate the effectiveness of the optical Faraday rotation method for measuring peak magnetic fields.

Main Methods:

  • The study varied the initial seed magnetic field, specifically reducing it from 3.8 T to 3.0 T.
  • The optical Faraday rotation method, utilizing a minimal size probe, was employed for magnetic field detection.
  • Measurements were taken within the confined space of an imploding liner's inner wall to minimize interference.

Main Results:

  • A reduction in the seed magnetic field from 3.8 T to 3.0 T resulted in a substantial increase in the final peak magnetic field.
  • The optical Faraday rotation method successfully detected peak magnetic fields despite electromagnetic noise and shockwave effects.
  • The experiment recorded a maximum magnetic field of 985 T, nearing the 1000 T threshold.

Conclusions:

  • Lowering the initial seed magnetic field is a viable strategy to enhance the final magnetic field strength in electromagnetic flux compression.
  • The optical Faraday rotation technique is a robust and accurate method for measuring ultra-high magnetic fields in challenging environments.
  • This research sets a new benchmark for indoor magnetic field generation using electromagnetic flux compression, paving the way for future high-field research.