Current measurements in space plasmas and the problem of separating between spatial and temporal variations in the field of a plane electromagnetic wave

Autor: A.E. Reznikov, L. J. C. Woolliscroft, A. Yu. Schyokotov, Stanislav Klimov, Vladimir Krasnoselskikh, A. E. Kruglyi, A.M. Natanzon
Rok vydání: 1991
Předmět:
Zdroj: Advances in Space Research. 11:37-40
ISSN: 0273-1177
DOI: 10.1016/0273-1177(91)90007-7
Popis: A description of an instrument for measuring a current density vector is presented. This instrument uses 3 orthogonal Rogovskii coils. The need for such and instrument is discussed. Together with magnetic measurements it is possible to determine the wave vector of a plane electromagnetic wave using the formula B × CurlB = kB2 = B × [j + ∂E∂t] using direct on-board processing and assuming that ∂E∂t can be neglected in this frequency range. The real frequency of the wave can be calculated using Doppler's law ω = Ω + kυ, where υ is the vehicle velocity and Ω the measured frequency. Test results for prototype coil are presented, together with a discussion of further developments.
Databáze: OpenAIRE