Effective Length of a Receiving Antenna in a Streaming Plasma
1.
SYSNO ASEP
0043015
Document Type
J - Journal Article
R&D Document Type
Journal Article
Subsidiary J
Ostatní články
Title
Effective Length of a Receiving Antenna in a Streaming Plasma
Title
Efektivní délka přijímací antény v proudícím plazmatu
Author(s)
Chugunov, Yu. V. (RU) Fiala, Vladimír (UFA-U)
Source Title
IEEE Transactions on Antennas and Propagation
- ISSN 0018-926X
Roč. 54, č. 10 (2006), s. 2750-2756
Number of pages
7 s.
Language
eng - English
Country
US - United States
Keywords
receiving antenna ; plasma waves ; resonance
Subject RIV
BL - Plasma and Gas Discharge Physics
R&D Projects
IAA301120601 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ
AV0Z30420517 - UFA-U, BC-A (2005-2011)
Annotation
The root-mean-square (r.m.s) voltage induced on a receiving dipole antenna by incident potential waves in a streaming otherwise isotropic plasma in the resonance frequency band is calculated. The open-circuit voltage on antenna terminals is the product of the wave electric field strength at the receiving point and the effective length of the receiving antenna Leff. The effective length differs substantially from that in a non-streaming plasma for waves propagating downstream at frequencies close to the plasma frequency. The case of stream velocity lower than the electron thermal velocity is considered, which is of interest for wave measurements in the solar wind. We discuss some implications for relevant experiments in space plasmas, namely the appearance of narrowband lines in the spectra around local plasma frequency observed in the solar wind. The possible exaggeration of plasma wave amplitudes in conventional interpretations of measurements is pointed out.
