Theanti-matter creature is repelled when the atomic accelerator of aMorestranprobe ship is coupled with itsforce field. (TV:Planet of Evil)

Anatomic accelerator was a feature ofspacecraft by the372nd century.

TheMorestranprobe ship sent toZeta Minor in37166 had an atomic accelerator. On the advice of theFourth Doctor,Salamar ordered for it to be coupled with the ship'sforce field. This fended off an attack on the probe by theanti-matter creature. (TV:Planet of Evil)