In-FEEP Ion Beam Neutralization with Thermionic and Field Emission Cathodes

Colleen Marrese-Reading; J. Polk; Juergen Mueller; A. Owens; Martin Tajmar; C. Spindt; R. Fink

In-FEEP Ion Beam Neutralization with Thermionic and Field Emission Cathodes

Colleen Marrese-Reading, J. Polk, Juergen Mueller , A. Owens, Martin Tajmar, C. Spindt, R. Fink

Research output: Chapter in Book or Conference Proceedings › Conference Proceedings with Oral Presentation › peer-review

Abstract

Charge neutralization of an In-FEEP thruster was demonstrated with three different electron sources by zeroing the floating potential of the thruster and neutralizer system. The three cathodes used in the investigation include a mixed metal thermionic cathode, a carbon nanotube field emission cathode, and a Spindt-type Mo field emission array cathode. The field emission cathodes significantly improved the power to thrust ratio of the thruster and neutralizer system. At 10 µN, the power-to-thrust ratio of the ion and electron source FEEP system decreased by 50% when the Spindt-type cathode was used. Measured plasma potential were consistent with theoretical results obtained previously.

Original language	English
Title of host publication	27th International Electric Propulsion Conference
Pages	15
Number of pages	1
Publication status	Published - 2001
Event	27th International Electric Propulsion Conference - Duration: 1 Jan 2001 → …

Conference

Conference	27th International Electric Propulsion Conference
Period	1/01/01 → …

Research Field

Not defined

Cite this

@inproceedings{e3f84ce75709483e9bd718162dbed613,

title = "In-FEEP Ion Beam Neutralization with Thermionic and Field Emission Cathodes",

abstract = "Charge neutralization of an In-FEEP thruster was demonstrated with three different electron sources by zeroing the floating potential of the thruster and neutralizer system. The three cathodes used in the investigation include a mixed metal thermionic cathode, a carbon nanotube field emission cathode, and a Spindt-type Mo field emission array cathode. The field emission cathodes significantly improved the power to thrust ratio of the thruster and neutralizer system. At 10 µN, the power-to-thrust ratio of the ion and electron source FEEP system decreased by 50% when the Spindt-type cathode was used. Measured plasma potential were consistent with theoretical results obtained previously.",

author = "Colleen Marrese-Reading and J. Polk and Juergen Mueller and A. Owens and Martin Tajmar and C. Spindt and R. Fink",

year = "2001",

language = "English",

pages = "15",

booktitle = "27th International Electric Propulsion Conference",

note = "27th International Electric Propulsion Conference ; Conference date: 01-01-2001",

}

TY - GEN

T1 - In-FEEP Ion Beam Neutralization with Thermionic and Field Emission Cathodes

AU - Marrese-Reading, Colleen

AU - Polk, J.

AU - Mueller , Juergen

AU - Owens, A.

AU - Tajmar, Martin

AU - Spindt, C.

AU - Fink, R.

PY - 2001

Y1 - 2001

N2 - Charge neutralization of an In-FEEP thruster was demonstrated with three different electron sources by zeroing the floating potential of the thruster and neutralizer system. The three cathodes used in the investigation include a mixed metal thermionic cathode, a carbon nanotube field emission cathode, and a Spindt-type Mo field emission array cathode. The field emission cathodes significantly improved the power to thrust ratio of the thruster and neutralizer system. At 10 µN, the power-to-thrust ratio of the ion and electron source FEEP system decreased by 50% when the Spindt-type cathode was used. Measured plasma potential were consistent with theoretical results obtained previously.

AB - Charge neutralization of an In-FEEP thruster was demonstrated with three different electron sources by zeroing the floating potential of the thruster and neutralizer system. The three cathodes used in the investigation include a mixed metal thermionic cathode, a carbon nanotube field emission cathode, and a Spindt-type Mo field emission array cathode. The field emission cathodes significantly improved the power to thrust ratio of the thruster and neutralizer system. At 10 µN, the power-to-thrust ratio of the ion and electron source FEEP system decreased by 50% when the Spindt-type cathode was used. Measured plasma potential were consistent with theoretical results obtained previously.

M3 - Conference Proceedings with Oral Presentation

SP - 15

BT - 27th International Electric Propulsion Conference

T2 - 27th International Electric Propulsion Conference

Y2 - 1 January 2001

ER -

In-FEEP Ion Beam Neutralization with Thermionic and Field Emission Cathodes

Abstract

Conference

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