کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
759630 896485 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linear wave dispersion relation of a magnetized relativistic rectilinear electron beam-dielectric system
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Linear wave dispersion relation of a magnetized relativistic rectilinear electron beam-dielectric system
چکیده انگلیسی

A general dispersion relation is derived for a relativistic rectilinear electron beam of arbitrary momentum distributions interacting with a dielectric in a guide magnetic field, on the basis of Maxwell equations and the relativistic Vlasov equation. The instability occurs when the beam velocity exceeds the wave phase velocity in the medium. The linear wave dispersion relation, growth rate, spatial growth rate are studied analytically for delta and Lorentzian distributions of beam momentums in detail. The results are of importance for a new kind of high-power microwave generation or amplification devices based on anomalous Doppler effect.


► The general dispersion relation for beam-wave interaction system has been derived.
► The result implies that instability occurs when the beam velocity exceeds the wave phase velocity.
► The growth rate and spatial growth rate are presented analytically.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Communications in Nonlinear Science and Numerical Simulation - Volume 17, Issue 2, February 2012, Pages 650–653
نویسندگان
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