Interferometric Density Measurements in the Arc of a Pulsed Plasma Thruster
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
Pagination or Media Count:
Spatial and temporal measurements of the electron density were made using a He-Ne laser. The multiple pass Mach-Zehnder interferometer detects densities above ten to the fifteenth power particlescubic centimerers. Using these data and free streaming solutions to the Boltzmann equation, which model the expansion of the exhaust, we determine the ion temperature and total charge in the exhaust. The percentage ionization can than be found, and estimates made of the gas dynamic portion of the thrust.
- Electric and Ion Propulsion