Phase Space Analysis for Dynamics of Three Vortices of Pure Electron Plasma Trapped with Penning Trap.

A trilinear phase space analysis is applied for dynamics of three electron clumps confined with a Penning- Malmberg trap. We show that the Aref's concept of phase space describe the observed features of the dynamics of three point vortices qualitatively. In vacuum, phase point P moves to physical region boundary in phase space, i:e: triangular configuration cannot be kept. With the addition of a low level background vorticity distribution (BGVD), the excursion of the clumps is reduced and the distance between P and stable point does not extend in the phase space. [ABSTRACT FROM AUTHOR]