نتایج جستجو برای: radiation damping
تعداد نتایج: 259417 فیلتر نتایج به سال:
A binary system composed of an oscillating and rotating coplanar dusty disk and a point mass is considered. The conservative dynamics is treated on the Newtonian level. The effects of gravitational radiation reaction and wave emission are studied to leading quadrupole order. The related waveforms are given. The dynamical evolution of the system is determined semi-analytically exploiting the Ham...
[1] Clear-sky longwave radiative feedback processes depicted in climate models prepared for the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) are investigated using satellite observations of the clear-sky outgoing longwave radiation (OLR). Estimates of clear-sky longwave radiative damping are derived from regional, seasonal, and interannual sources of variabili...
We derive the relativistic equations for stellar perturbations, including in a consistent way shear viscosity in the stress-energy tensor, and we numerically integrate our equations in the case of large viscosity. We consider the slow rotation approximation, and we neglect the coupling between polar and axial perturbations. In our approach, the frequency and damping time of the emitted gravitat...
There are two points at which coherent synchrotron radiation (CSR) could be of concern in linear colliders. First, it may cause transverse x-emittance degradation in bunch compressors, since energy changes due to CSR get mapped into transverse coordinates through dispersion. Second, it might cause longitudinal bunch instabilities in the damping rings at high current, possibly leading to a quasi...
We discuss the rotational excitation of small interstellar grains and the resulting electric dipole radiation from spinning dust. Attention is given to excitation and damping of grain rotation by: collisions with neutrals; collisions with ions; “plasma drag”; emission of infrared radiation; emission of electric dipole radiation; photoelectric emission; and formation of H2 on the grain surface. ...
INTRODUCTION Radiation damping (RD) describes a second-order effect where the signal-induced current in the receiver coil acts back onto the primary spin system [1]. According to Lenz’s law, the RD field acts in a way to oppose its original cause. In that sense RD can be understood as a 1) self-generating and 2) selfregulating flip-back pulse, which causes the transverse magnetization to return...
We present measurements of the acoustic vibrations of single gold nanorods deposited on a glass substrate immersed in air and water by ultrafast pump-probe spectroscopy. The nanorods display two vibration modes, the breathing mode and the extensional mode. The damping time of the two modes is influenced by the environment, and a reduction of the quality factor is observed when the particles are...
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