Early Results of ICRH Experiments in VX-10
Abstract
The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is an open-ended RF-heated propulsion concept currently under development by NASA. Current experiments (VX-10) focus on the demonstration of significant ion acceleration by ion cyclotron resonance. Theoretical and plasma simulation predictions are used to define the parameter space of interest in these experiments. Early results show significant ion energy absorption with concomitant plasma acceleration and agree well with predicted values. Plasma diagnostics include Mach, triple, RF and emissive probes, a momentum sensor, retarding potential analyzers, a spectrometer and a 70GHz microwave interferometer. An array of thermocouples monitor heat deposition to the walls of the discharge tube. A baratron sensor and a fast ion gauge provide time-tagged background pressure. Early results from these diagnostics will be presented and discussed.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2003
- Bibcode:
- 2003APS..DPPRP1138C