Magnetically-shielded Hall thrusters are now state-of-the-art, potentially allowing for much higher current densities. How does the performance change at these previously-unexplored operating regimes? How can we push these power limits even further?
Krypton offers a cheaper and more readily available alternative to xenon as a propellant for Hall thrusters for low-thrust, high-Isp operation. Why is its efficiency so much lower than xenon's? How do we improve its performance and overcome its design challenges?
Shumlak, U, McLean, H.S., Nelson, B.A., Schmidt, A.E., Golingo, R.P., Claveau, E.L., Higginson, D.P., Hughes, M.C., Ross, M.P., Barhydt, J.R., Caudle, D.L., Forbes, E.G., Kim, B., Su, L.L., Townsend, R.M., Tummel, K.K., Weber, T.R. IAEA Fusion Energy Conference, 2016.