22 Papers
336 Citations
J. Trøim is an academic researcher from Norwegian Defence Research Establishment. The author has contributed to research in topics: Rocket & Sounding rocket. The author has an hindex of 10, co-authored 22 publications.
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Papers
Active Spacecraft Potential Control
W. Riedler,K. M. Torkar,F. Rüdenauer,M. Fehringer,Arne Pedersen,R. Schmidt,Réjean Grard,H. Arends,B. T. Narheim,J. Trøim,Roy B. Torbert,Richard C. Olsen,E. C. Whipple,R. Goldstein,N. Valavanoglou,Hua Zhao +15 more
TL;DR: In this paper, an active spacecraft potential control instrument (ASPOC) is proposed to measure the cold component of the ambient plasma in the case of the Geotail spacecraft with ion emitters of the liquid-metal ion-source type.
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Rocket measurements showing removal of electrons above the mesopause in summer at high latitude
A. Pedersen,J. Trøim,J.A. Kane +2 more
TL;DR: In this article, the authors show that removal of electrons above mesopause in summer at high latitude can be accomplished by using a rocket at high altitude at high latitudes and high altitude.
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POLAR 5—an electron accelerator experiment within an aurora. 2. Scattering of an artificially produced electron beam in the atmosphere
TL;DR: In this article, the interaction between an artificially produced narrow beam of electrons and the upper atmosphere has been studied by the POLAR 5 electron accelerator "mother"-daughter" rocket, and it is shown how the beam develops a "halo" of scattered electrons and how the low energy electron population in this halo is produced partly during the ionization process (at low altitudes), partly by a "wave-plasma" interaction which accelerates the ionospheric background electrons.
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Laboratory simulation of vehicle-plasma interaction in low Earth orbit
K.R. Svencs,J. Trøim +1 more
TL;DR: In this paper, the authors have performed simulations in a plasma chamber of the interaction between a stationary charged body and a streaming plasma and found that both the Mach number and the body potential had a significant influence on the wake formation.
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Studies of the electrical charging of the tethered electron accelerator mother-daughter pocket Maimik
TL;DR: The MAIMIK experiment as mentioned in this paper was designed to study the charging of an electron-beam emitting payload using a tethered mother-daughter payload configuration, and the particle accelerator on the daughter emitted short pulses of 8 keV energy electrons with a beam current which was varied in 6 steps from 20 to 800 mA.
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