Optimizing Directional Power Deposition of Antenna in Radio Frequency Excited Helicon Plasma Thruster

Md Mahbubur Rahman, Divya Shankar, Ighor Uzhinsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Plasma thruster operating with high-density helicon source is expected to mitigate the problems of the finite lifetime of electric thrusters and shows a possibility to be incorporated in spacecraft for long-duration interplanetary missions. Helicon wave is a low-frequency whistler wave, where the frequency \omega lies in between lower hybrid frequency \omega-{LH} and electron cyclotron frequency \omega-{c}. The generated electromagnetic wave from helicon antenna penetrates to the plasma and transfer energy to the particles. In helicon thruster with lower rf power 1 - 2 kW, relatively fully ionized plasma \eta\geq 10^{14}cm^{3} can be achieved [1], [2]. The high plasma resistance and power deposition are the key factors for the optimal design of helicon antenna [3]. This research work investigates the directional power deposition of nagoya, half helix, and a single loop antenna at a driven frequency, f=13.56 MHz. A wide range of plasma densities, n-{0} from 1011cm to 10 cm and magnetic field strength, B-{0}=0.3T was taken into account. HELIC code [4]-[7] is used for designing rf plasma sources. Plasma density profile has significant effects on antenna plasma coupling. The optimal combination of the plasma density, magnetic field for which the rf power deposition maximize presented.

Original languageEnglish
Title of host publication2020 IEEE Aerospace Conference, AERO 2020
PublisherIEEE Computer Society
ISBN (Electronic)9781728127347
DOIs
Publication statusPublished - Mar 2020
Externally publishedYes
Event2020 IEEE Aerospace Conference, AERO 2020 - Big Sky, United States
Duration: 7 Mar 202014 Mar 2020

Publication series

NameIEEE Aerospace Conference Proceedings
ISSN (Print)1095-323X

Conference

Conference2020 IEEE Aerospace Conference, AERO 2020
Country/TerritoryUnited States
CityBig Sky
Period7/03/2014/03/20

Keywords

  • helicon thruster
  • helicon-wave
  • Power deposition
  • Trivelpiece-Gould mode

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