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Long Life Cold Cathodes for Hall effect Thrusters

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
69134
Program Year/Program:
2004 / SBIR
Agency Tracking Number:
033409
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Stellar Micro Devices
2020 Centimeter Circle Austin, TX 78758-4956
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2004
Title: Long Life Cold Cathodes for Hall effect Thrusters
Agency: NASA
Contract: NNC04CA70C
Award Amount: $66,949.00
 

Abstract:

An electron source incorporating long life, high current density cold cathodes inside a microchannel plate for use with ion thrusters is proposed. Cathode lifetime in the harsh environment of an ion thruster has been a major issue with cold cathode sources. The anticipated long life with the proposed technology is due to the combination of three design features. The first feature is the choice of an edge emitter geometry known to be much more robust compared to other geometries such as tip emitters or nanotube configurations. The second feature is the choice of carbon as the emitter material. Carbon is well known for resistance to damage from ion bombardment. The third feature is the deposition of the carbon edge emitter inside one end of a channel plate. The channel plate provides some shielding from the thruster ion stream. A further benefit could be realized by using a standard electron multiplying channel plate so as to also greatly increase the electron density of the source.

Principal Investigator:

Ronald Hellmer
Principal Investigator
5129977781
ronhellmer@yahoo.com

Business Contact:

Mark Eaton
CEO & President
5129977781
eaton@stellardisplay.com
Small Business Information at Submission:

Stellar Micro Devices
2020 Centimeter Circle Austin, TX 78758

EIN/Tax ID: 742843930
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No