A cesium ion rocket is to be used at a specific impulse of 5000 s. Assuming the cesium to...

A cesium ion rocket is to be used at a specific impulse of 5000 s. Assuming the cesium to be 100% singly ionized (q/m = 7.25 × 105 C/kg), what is the required acceleration voltage and the beam power  per unit thrust?

If the cesium is 90% singly ionized and 10% doubly ionized, what is the specific impulse and beam power per unit thrust, assuming that the acceleration voltage is unchanged?