Multiprobe characterization of plasma flows for space propulsion

Damba, Julius and Argente, P. and Maldonado, P.E. and Cervone, A. and Domenech-Garret, J.L and Conde, L. (2017). Multiprobe characterization of plasma flows for space propulsion. "Journal of Physics: Conference Series", v. 958 ; ISSN 1742-6588.


Title: Multiprobe characterization of plasma flows for space propulsion
  • Damba, Julius
  • Argente, P.
  • Maldonado, P.E.
  • Cervone, A.
  • Domenech-Garret, J.L
  • Conde, L.
Item Type: Article
Título de Revista/Publicación: Journal of Physics: Conference Series
Date: 2017
ISSN: 1742-6588
Volume: 958
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Física Aplicada a las Ingenierías Aeronáutica y Naval
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Plasma engines for space propulsion generate plasma jets (also denominated plasma plumes) having supersonic ion groups with typical speeds in the order of tens of kilometers per second, which lies between electron and ion thermal speeds. Studies of the stationary plasma expansion process using a four-grid retarding field energy analyzer (RFEA), an emissive probe (EP) and a Langmuir probe (LP), all mounted on a three dimensionally (3D) displaced multiprobe structure are discussed. Specifically, the determination of plasma beam properties from the RFEA current ?voltage (IV) characteristic curves is presented. The experimental results show the ion energy spectra to be essentially unchanged over 300 mm along the plasma-jet expansion axis of symmetry. The measured ion velocity distribution function (IVDF) results from the superposition of different ion groups and has two dominant populations: A low-energy group constituted of ions from the background plasma is produced by the interaction of the plasma jet with the walls of the vacuum chamber. The fast-ion population is composed of ions from the plasma beam moving at supersonic speeds with respect to the low-energy ions. The decreasing spatial profiles of the plasma-jet current density are compared with those of the low-energy ion group, which are not uniform along the axis of symmetry because of the small contributions from other ion populations with intermediate speeds.

Funding Projects

Government of SpainESP2013–41078-RUnspecifiedUnspecifiedDesarrollo y caracterización de un sistema híbrido de propulsión espacial por plasma de bajo consumo eléctrico

More information

Item ID: 51016
DC Identifier:
OAI Identifier:
DOI: 10.1088/1742-6596/958/1/012002
Official URL:
Deposited by: Memoria Investigacion
Deposited on: 28 Nov 2018 13:02
Last Modified: 28 Nov 2018 13:02
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