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Introductory Physics Homework Help
Solving Part e of the Electron Beam Problem
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[QUOTE="Steve4Physics, post: 6485043, member: 681522"] Here’s a guess… I suspect the key phrase in part e) is “… [B]long after[/B] the beam entering the plasma.” In the long-term (when a steady-state has been reached), the plasma-electrons will have been largely expelled from the region radius r’ due to repulsion by the electron beam. So what remains of the plasma are the positive ions only. The electric field at r’ is then the sum of the fields from the electron beam and positive plasma ions. It’s not entirely consistent with the wording of question and solution, but maybe these are simply poorly written. I haven't checked your other answers. [/QUOTE]
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Introductory Physics Homework Help
Solving Part e of the Electron Beam Problem
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