Two shells of counterstreaming plasma, and the filamentation mode perpendicular to the streaming direction.
Filamentation instability in a counterstreaming plasma for three values of electron streaming speed: (solid line), 1 (dashed line), and 0.8 (dotted line). The coordinates are and .
Weibel instability in a bi-Maxwellian plasma for three values of anisotropy : (solid line), 2 (dashed line), and 1 (dotted line). The coordinates are and .
Cumulative effect (solid line) of the Weibel and filamentation instabilities in a counterstreaming electron plasma, , with a bi-Maxwellian distribution, . For comparison, the growing rates of the Weibel instability (dotted line) and filamentation instability (dashed line) are represented for the same values of and . ( and .)
The same as in Fig. 4 but with and .
The same as in Fig. 4 but with and . Weibel instability does not exist along the propagation direction of filamentation instability, but the unstable mode is suppressed (solid line) by the cumulative effect.
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