English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Electron current density profiles were obtained in the region above two magnetic cusps in a 20 cm partial conic ring cusp ion thruster discharge chamber. The density profiles were obtained by use of a translatable Langmuir probe and an automated motion stage and data collection system. These high-resolution density profiles allowed for the study of electron collection mechanics in the absence of gas flow and plasma production, as well as at varying levels of gas flow. This is the second stage in a series of experiments aimed at better understanding collection physics at the magnetic cusps during discharge chamber operation. The current density maps allow for particle transport through the cusps to be visualized, and see how discharge chamber geometry plays a role in collection. Transmission coefficients and loss widths as a function of probe height above the anode were calculated from the current density data, and compared at a variety of discharge currents. In addition, these current density maps were compared to those obtained using a planar line cusp source geometry to study how source geometry and magnet cusp spacing affects collection.

Spatially-Resolved Study of Inter-Cusp Transport and Containment of Primary Electrons