For several years a research activity has been carried out at Alta-Centrospazio on hollow cathode models for both single- and multiple-channel configurations. A review of the singlechannel model is presented in the first part of the paper. In the light of a certain discrepancy between numerical and experimental results, the adopted ionisation mechanism is discussed as the most probable responsible for this fact and a most suitable process is presented in order to improve model prediction capability. In the second part the paper deals with the multiple-channel hollow cathode model developed by Alta-Centrospazio more recently for application to high-current hollow cathodes design for MPD thrusters.
Hollow Cathode Study at Alta-Centrospazio
PAGANUCCI, FABRIZIO;ANDRENUCCI, MARIANO
2005-01-01
Abstract
For several years a research activity has been carried out at Alta-Centrospazio on hollow cathode models for both single- and multiple-channel configurations. A review of the singlechannel model is presented in the first part of the paper. In the light of a certain discrepancy between numerical and experimental results, the adopted ionisation mechanism is discussed as the most probable responsible for this fact and a most suitable process is presented in order to improve model prediction capability. In the second part the paper deals with the multiple-channel hollow cathode model developed by Alta-Centrospazio more recently for application to high-current hollow cathodes design for MPD thrusters.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
