Fisor
I always wondered if something very much like an IEC fusor could be used for this.
https://arc.aiaa.org/doi/abs/10.2514/6.2018-0002
Seems my reasoning was correct, the beam would be very energetic but using the Pulsar approach may well be more efficient though for certain applications the IEC may work.
Impulse drive versus thrusters.
Biting the hand that feeds IT
