A Study of the Thrust Generated by a T6 Hollow Cathode
2006
The thrust produced by a T6 ion engine hollow cathode has been measured using a
target-based system, with argon, krypton and xenon as propellants, for discharge current
values of 5-25 A and a wide range of mass flow rates. The calculated values of specific
impulse, which are generally higher for lighter gases, are far in excess of those that could be
attributed to heating a gas to thermal equilibrium with the walls. This seems to suggest an
arcjet-like operation mechanism.
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