Publication Date:
2019-07-13
Description:
Cavity ring-down spectroscopy was used to make real-time erosion measurements from the NASA High Voltage Hall Accelerator thruster. The optical sensor uses 250 nm light to measure absorption of atomic boron in the plume of an operating Hall thruster. Theerosion rate of the High Voltage Hall Accelerator thruster was measured for discharge voltages ranging from 330 to 600 V and discharge powers ranging from 1 to 3 kW. Boron densities as high as 6.5 x 10(exp 15) per cubic meter were found within the channel. Using a very simple boronvelocity model, approximate volumetric erosion rates between 5.0 x 10(exp -12) and 8.2 x 10(exp -12) cubic meter per second were found.
Keywords:
Spacecraft Propulsion and Power
Type:
IEPC-2013-119
,
GRC-E-DAA-TN11363
,
International Electric Propulsion Conference; Oct 06, 2013 - Oct 10, 2013; Washington, DC; United States
Format:
application/pdf
Permalink
