NDLI: Initial experiments of a new permanent magnet helicon thruster

Content Provider	IEEE Xplore Digital Library
Author	Sheehan, J. P. Longmier, Benjamin W. Reese, Ingrid M. Collard, Timothy A. Ebersohn, Frans H. Dale, Ethan T. Wachs, Benjamin N. Ostermann, Meghan E.
Copyright Year	2014
Description	Author affiliation: University of Michigan, 1320 Beal Ave., Ann Arbor, 48109, USA (Sheehan, J. P.; Longmier, Benjamin W.; Reese, Ingrid M.; Collard, Timothy A.; Ebersohn, Frans H.; Dale, Ethan T.; Wachs, Benjamin N.; Ostermann, Meghan E.)
Abstract	A new design for a permanent magnet helicon thruster is presented. Its small plasma volume (∼10 $cm^{3})$ and low power requirements (<100 W) make it ideal for propelling nanosatellites (<10 kg). The magnetic field reached a maximum of 600 G in the throat of a converging-diverging nozzle and decreased to 0.5 G, the strength of earth's magnetic field, within 50 cm allowing the entire exhaust plume to develop in the vacuum chamber without being affected by the chamber walls. Low gas flow rates (∼10 sccm) and high pumping speeds (∼10,000 l/s) were used to more closely approximate the conditions of space. A parametric study of the thruster operational parameters was performed to determine its capabilities as both a thruster and as a plasma source for magnetic nozzle experiments. The plasma density, electron temperature, and plasma potential in the plume were measured with Langmuir probes, double probes, and emissive probes. These measurements characterized the ion acceleration mechanism which produces thrust. Thrust measurements were made with an innovative micronewton thrust stand. Measurements were compared to predictions made with fluid theory and particle-in-cell simulations.
Starting Page	1
Ending Page	1
File Size	194264
Page Count	1
File Format	PDF
ISBN	9781479927111
e-ISBN	9781479927135
DOI	10.1109/PLASMA.2014.7012225
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature measurement Atmospheric measurements Particle measurements Plasma measurements Probes Permanent magnets Plasmas
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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