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Dispersion in beam‐plasma systems: I. Pressure anisotropy
Author(s) -
Verheest Frank
Publication year - 1971
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19710110204
Subject(s) - dispersion relation , allowance (engineering) , anisotropy , plasma , arbitrariness , dispersion (optics) , beam (structure) , physics , homogeneous , optics , doppler effect , mechanics , atomic physics , thermodynamics , quantum mechanics , mechanical engineering , linguistics , philosophy , engineering
A treatment is given of linear waves in an homogeneous and collisionless beam‐plasma system of infinite extent. Two main features of the treatment are the arbitrariness of the composition of the system, even with regard to the direction of the beams, and the allowance of anisotropic pressure variation. The resulting dispersion equation is discussed in several forms. Generally a coupling occurs between all waves usually present in a plasma, plus a modification of the frequencies not only due to parallel Doppler‐shifts.