A disruptor beam or disruptor blast was the energy discharge fired in the form of a particle beam as emitted from a disruptor weapon.
Romulan disruptor fire produced "extremely high levels of residual antiprotons", the antiproton decay could be used to determine the time frame from which the weapons fire occurred. (TNG: "Face Of The Enemy")
In 2373, Lieutenant Commander Tuvok detected that damage to a wall inside a Species 8472 bio-ship was caused by a Borg disruptor beam. However, the wall appeared to be regenerating itself. (VOY: "Scorpion")