Ionic pulse

An ionic pulse was an energy discharge that could be produced by starships.

In 2371, when the USS Enterprise (NCC-1701-D) came under attack from a D-12 Klingon Bird-of-Prey, Lieutenant Commander Data targeted an ionic pulse at the Bird-of-Prey's defective plasma coil. This had the effect of engaging the Klingons' cloaking device and lowering their shields, making them vulnerable to a counterattack.