PLASMA
22/05/2021

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Context:

  • Scientists from Indian Institute of Geomagnetism (IIG), an autonomous institute under the DST have recently developed a theory that helps understand the complicated nature of Sun-Earth interaction's happening in the magnetosphere-- an area of space around Earth that is controlled by the Earth’s magnetic field.

About:

  • This new theory has opened a plethora of opportunities to unlock the mysteries of the ion-hole structures (a localized plasma region where the ion density is lower than the surrounding plasma).
  • They have completely ruled out the necessity of the upper limit in the temperature ratio between ions and electrons for the generation of a special kind of wave called Bernstein Green Kruskal (BGK) waves, named after the scientists who predicted this wave.
  • They revealed that the electrons that are not part of ion hole dynamics also play a vital role.
  • The new theory developed by the IIG team sheds light on the nature's greatest mystery that causes phenomena ---plasma transport and heating of plasma -- the fourth state of matter after solid, liquid, and gas, which is the most natural and widely observed state of matter in the entire universe.

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