We have studied plasma oscillations in a flux tube created in a dual superc
onductor. Starting from a static flux tube configuration, with electric cha
rges at either end, we release a fluid of electric charges in the system th
at accelerate and screen the electric field. The weakening of the electric
field allows the flux tube to collapse, and the inertia of the charges forc
es it open again. We find strong radiation of electric flux into the superc
onductor in all regimes of couplings.