  Recent pulsed-power experiments have demonstrated the formation of
astrophysically-relevant, differentially rotating plasmas [1]. Key features of
the plasma flows are the discovery of a quasi-Keplerian rotation curve, the
launching of highly-collimated angular-momentum-transporting axial jets, and a
hollow density structure sustained by the centrifugal barrier effect. In this
communication we discuss several features of the plasma structure in these
experiments through order-of-magnitude models. First, we show that the observed
rotation velocity would produce a centrifugal force strong enough to support
the hollow density profile. Second, we show that the axial jet should diverge
much faster than what was observed, were it not for a magnetized halo with 3T
which surrounds the jet and exerts pressure on the interface.Finally, we
discuss the temperature structure in the axial jet and plasma halo.We show that
a 3T magnetic field would also suppress electron heat conduction,leading to the
flat profile observed experimentally.We also find that the axial jet is
efficiently radiatively cooled,whereas the halo is not, which would explain the
thermal decoupling between the two regions.

Plasma Physics