Complex sentence: The charged pions would travel in helical spirals around the axial electromagnetic field lines inside the nozzle and in this way the charged pions could be collimated into an exhaust jet that is moving at 0.94 "c".
Split into simpler sentences: The charged pions would travel in helical spirals around the axial electromagnetic field lines inside the nozzle. In this way the charged pions could be collimated into an exhaust jet that is moving at 0.94 "c".