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un:electric-drift [2024/11/06 11:16] – asadun:electric-drift [2024/11/06 11:16] (current) – asad
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 Here, the E-field is perpendicular to the B-field, and we see the gyration planes of an ion and an electron. When moving in the direction of the E-field, ions accelerate, while in the opposite direction, they decelerate. In the case of electrons, the opposite occurs: they decelerate in the direction of the E-field and accelerate in the opposite direction. But since the gyration of electrons is also opposite, the final drift of both types of charges ends up in the same direction. This can be clarified further with an example of an ion. When an ion moves in the direction of the E-field, its gyro-radius increases due to acceleration, and in the opposite direction, the radius decreases. Because of this increase and decrease in radius, the center of the entire gyro-orbit, i.e., the guiding center, begins to drift in one direction. The drift direction is along the cross product of the E and B fields, perpendicular to both fields. Here, the E-field is perpendicular to the B-field, and we see the gyration planes of an ion and an electron. When moving in the direction of the E-field, ions accelerate, while in the opposite direction, they decelerate. In the case of electrons, the opposite occurs: they decelerate in the direction of the E-field and accelerate in the opposite direction. But since the gyration of electrons is also opposite, the final drift of both types of charges ends up in the same direction. This can be clarified further with an example of an ion. When an ion moves in the direction of the E-field, its gyro-radius increases due to acceleration, and in the opposite direction, the radius decreases. Because of this increase and decrease in radius, the center of the entire gyro-orbit, i.e., the guiding center, begins to drift in one direction. The drift direction is along the cross product of the E and B fields, perpendicular to both fields.
  
-The actual explanation of drift can be derived from the [[un:Lorentz transformation]] of the electric field in the moving system of a moving charge. In the moving system, the transformed field is+The actual explanation of drift can be derived from the [[Lorentz transformation]] of the electric field in the moving system of a moving charge. In the moving system, the transformed field is
  
 $$ \mathbf{E}' = \mathbf{E} + \mathbf{v}\times\mathbf{B} = 0 $$ $$ \mathbf{E}' = \mathbf{E} + \mathbf{v}\times\mathbf{B} = 0 $$
un/electric-drift.1730916965.txt.gz · Last modified: 2024/11/06 11:16 by asad
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