A Brief Introduction to Space Plasma Physics.pdf - Institute of ...
A Brief Introduction to Space Plasma Physics.pdf - Institute of ...
A Brief Introduction to Space Plasma Physics.pdf - Institute of ...
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2<br />
– bˆ<br />
B ⋅∇B<br />
ˆ ˆ∇B<br />
cancels the parallel component<br />
2<br />
− ∇B 2µ<br />
0<br />
component <strong>of</strong> the magnetic pressure exerts a force on the<br />
<strong>of</strong> the term. Thus only the perpendicular<br />
plasma.<br />
= bb<br />
µ<br />
0<br />
2<br />
µ<br />
0<br />
2<br />
2<br />
ˆ<br />
– ( B ˆ ˆ nB<br />
) b ⋅∇b<br />
= −(<br />
) is the magnetic tension<br />
µ<br />
0 µ<br />
0R C<br />
and is directed antiparallel <strong>to</strong> the radius <strong>of</strong><br />
curvature (R C ) <strong>of</strong> the field line. Note that nˆ is<br />
directed outward.
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