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An isothermal plasma is confined between the planes x=±a in a magnetic field →B=B0→uz. | An isothermal plasma is confined between the planes x=±a in a magnetic field →B=B0→uz. | ||
The density distribution is n(x)=n0(1−x2/a2). | The density distribution is n(x)=n0(1−x2/a2). | ||
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+ | (a) Derive an expression for the electron diamagnetic drift velocity, as a function of x. | ||
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+ | (b) Draw a diagram showing the density profile and the direction of the electron diamagnetic drift on both sides of the midplane, | ||
+ | if →B points out of the paper. | ||
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+ | (c)Evaluate vD at x=a/2$,if\(B=0.2 T, kTe=2$eVand\(a=4 cm. |
Revisão das 12h48min de 6 de julho de 2017
(F. F.Chen 3.6) An isothermal plasma is confined between the planes x=±a in a magnetic field →B=B0→uz. The density distribution is n(x)=n0(1−x2/a2).
(a) Derive an expression for the electron diamagnetic drift velocity, as a function of x.
(b) Draw a diagram showing the density profile and the direction of the electron diamagnetic drift on both sides of the midplane, if →B points out of the paper.
(c)Evaluate vD at x=a/2$,if\(B=0.2 T, kTe=2$eVand\(a=4 cm.