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Magnetohydrodynamic scenario of plasma detachment in a magnetic nozzle
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View: Figures


Image of FIG. 1.
FIG. 1.

Magnetic nozzle with a ideally conducting conical wall. The nozzle divergence angle is .

Image of FIG. 2.
FIG. 2.

Perturbations in a super-Alfvénic flow propagate only downstream within a cone with angle . If the nozzle divergence angle is bigger than , then a perturbation created at the wall does not propagate inward.

Image of FIG. 3.
FIG. 3.

Nozzle with curved magnetic field lines. At the nozzle entrance, the walls are straight and the field lines are parallel to the axis. The nozzle expands slowly and eventually becomes a conical nozzle with angle .

Image of FIG. 4.
FIG. 4.

A moving slice of the plasma plume slows down due to the attraction force between the current in the slice and the wall current.

Image of FIG. 5.
FIG. 5.

Characteristics in a highly super-Alfvénic flow. The characteristics originate at the axis and the characteristics originate at the wall . Quantities and are normalized to and , where is the total magnetic flux and is the location of the cutoff point [expression for is given by Eq. (58)].

Image of FIG. 6.
FIG. 6.

Two-dimensional plasma density profile in a super-Alfvénic plume.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetohydrodynamic scenario of plasma detachment in a magnetic nozzle