Saturation of radiation-induced parametric instabilities by excitation of Langmuir turbulence
نویسندگان
چکیده
منابع مشابه
Diffusive radiation in Langmuir turbulence produced by jet shocks
Anisotropic distributions of charged particles including two-stream distributions give rise to generation of either stochastic electric fields (in the form of Langmuir waves, Buneman instability) or random quasi-static magnetic fields (Weibel and filamentation instabilities) or both. These two-stream instabilities are known to play a key role in collisionless shock formation, shock-shock intera...
متن کاملEffects of asymmetric stiffness on parametric instabilities of rotor
This work deals with effects of asymmetric stiffness on the dynamic behaviour of the rotor system. The analysis is presented through an extended Lagrangian Hamiltonian mechanics on the asymmetric rotor system, where symmetries are broken in terms of the rotor stiffness. The complete dynamics of asymmetries of rotor system is investigated with a case study. In this work, a mathematical model is ...
متن کاملParametric excitation of Alfven waves by gravitational radiation
We consider the parametric excitation of Alfven waves by gravitational radiation propagating on a Minkowski background, parallel to an external magnetic field. As a starting point, standard ideal magnetohydrodynamics equations incorporating the curvature of space-time has been derived. The growth rate of the Alfven waves has been calculated, using the normal-mode approach. Various astrophysical...
متن کاملParametric excitation of plasma waves by gravitational radiation
We consider the parametric excitation of a Langmuir wave and an electromagnetic wave by gravitational radiation, in a thin plasma on a Minkowski background. We calculate the coupling coe cients starting from a kinetic description, and the growth rate of the instability is found. The Manley Rowe relations are ful lled only in the limit of a cold plasma. As a consequence, it is generally di cult ...
متن کاملSuppressing Flow-induced Vibrations by Parametric Excitation
The possibility of suppressing self-excited vibrations of mechanical systems using parametric excitation is discussed. We consider a two-mass system of which the main mass is excited by a ow-induced, self excited force. A single mass which acts as a dynamic absorber is attached to the main mass and, by varying the stiiness between the main mass and the absorber mass, represents a parametric exc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physica Scripta
سال: 1996
ISSN: 0031-8949,1402-4896
DOI: 10.1088/0031-8949/1996/t63/002