In this thesis, Cerenkov radiation of a moving charged particle inside a Left-Handed material (LHM) is studied through both theory and numerical simulations. A LHM is a material whose permittivity and permeability have negative real parts. In the analysis of this thesis, the general theory of Cerenkov radiation was first studied for the unbounded regions filled with LHM. The physical meanings o...

INTRODUCTION Recently much attention has been paid to different formulations of surface wave force in wave-driven ocean and coastal circulations (e.g., McWilliams et al., 2004, Mellor, 2003, Smith, 2006 and others). Basically, the analytical expressions for surface wave force and wave-current interaction can be classified into two types. One is the classical wave 'radiation stress' concept pres...

Sub-millisecond pulsars should be triaxial (Jacobi ellipsoids), which may not spin down to super-millisecond periods via gravitation wave radiation during their lifetimes if they are extremely low mass bare strange quark stars. It is addressed that the spindown of sub-millisecond pulsars would be torqued dominantly by gravitational wave radiation (with braking index n ≃ 5). The radio luminosity...

The consequences of spin-rotation-gravity coupling are worked out for linear gravitational waves. The coupling of helicity of the wave with the rotation of a gravitational-wave antenna is investigated and the resulting modifications in the Doppler effect and aberration are pointed out for incident high-frequency gravitational radiation. Extending these results to the case of a gravitomagnetic f...

The propagation and radiation properties of dual composite right/left-handed (D-CRLH) transmission line metamaterials are presented, and validated experimentally with a 1D microstrip prototype. In its fast-wave regime, this structure operates as a leaky-wave antenna capable of backfire-to-endfire radiation scanning with beam squinting smaller than that of conventional CRLH (C-CRLH) antennas. It...

Experiments, theory, and simulations are reported on the effects of electron prebunching in a mildly relativistic, low current (200 kV, IA) free-electron laser amplifier operating in the collective (Raman) regime at a frequency of ~ 10 GHz. Prebunching is established by injecting an electromagnetic wave into a bifilar helical wiggler and then transporting the bunched beam into a second magnetic...

Related Articles Coupled electromagnetic TE-TM wave propagation in a layer with Kerr nonlinearity J. Math. Phys. 53, 123530 (2012) Experimental investigations of the TE11 mode radiation from a relativistic magnetron with diffraction output Phys. Plasmas 19, 113108 (2012) Omnidirectional photonic band gap enlarged by one-dimensional ternary unmagnetized plasma photonic crystals based on a new Fi...

An analytical model is developed for examining the vibro-acoustic properties of a fluid-loaded plate reinforced by periodic ribs of finite width. This model is used to understand the frequency filtering properties of the flexural wave and the structural-borne sound wave of the ribbed plate under different fluid loading conditions. The relationships between the flexural waves and the related sou...

We present a novel nonlinear mechanism for exciting a gravitational radiation pulse (or a gravitational wave) by dust magnetohydrodynamic (DMHD) waves in dusty astrophysical plasmas. We derive the relevant equations governing the dynamics of nonlinearly coupled DMHD waves and a gravitational wave (GW). The system of equations is used to investigate the generation of a GW by compressional Alfvén...

High-power laser radiation with frequency u>i and wave vector ktz propagating through a plasma at an angle to a density ripple (0, fco) produces current and density perturbation at (u>i ,ki + ko). The density perturbation couples with the oscillatory velocity at (wi, fci) to produce nonlinear current at [2^'1.(2 A-1 + k0)] driving second-harmonic electromagnetic radiation. For a specific value ...