Poynting Vector: Calculating E For Charged Particles in +ve X-Direction

Thread starter Gayle
Start date Sep 23, 2015
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The Poynting vector for a beam of charged particles moving in the positive x-direction can be expressed as S = E x H. While calculating the magnetic field H is straightforward, determining the electric field E requires understanding its relationship to the charged particles. The electric field generated by a continuous beam of charged particles resembles that of a charged wire, radiating radially outward. The Poynting vector is fundamentally a characteristic of the electromagnetic field rather than the particles themselves. Thus, the focus should be on the electromagnetic properties rather than the individual particles.

Sep 23, 2015

Gayle

what would be the poyinting vector of beam of charged particles moving in +ve x-direction.
S=ExH
calculating H is fine but how to calculate the E

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Sep 26, 2015

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The poynting vector is a property of the electromagnetic field, it is not a property of particles.
If you have a continuous beam you get the same electric field as from a charged wire: radially outwards.

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