Plasma warhead
A plasma warhead was a plasma explosive inside quantum torpedoes utilized by the Starfleet starships. () 

In 2372, Captain Sisko ordered Chief O'Brien to rig the Defiants two atmospheric probes with warheads from the ship's quantum torpedoes. ()

See also
Plasma bomb
Plasma charge
Plasma torpedo

de: Plasmasprengkopf
Explosive weapons