نتایج جستجو برای: nonlinear micro beam
تعداد نتایج: 437932 فیلتر نتایج به سال:
General analytical procedure for determination of the transverse feedback system parameters with a nonlinear regime of injection oscillations damping in circular accelerators and colliders is described. For this feedback loop the dependence between the kick value in the deflector and the beam deviation at the pick-up location is a nonlinear function. The beam dynamic nonlinear equation of the t...
Various types of micro-/nanostructures can be fabricated by femtosecond laser irradiation on metal surfaces. It has received extensive attention and research because its potential application value. In this paper, the effect focusing position micro-/nanostructure formation surface a titanium alloy (TC4) was systematically researched. The experimental results show that, in process focusing, spat...
In general, microelectromechanical systems (MEMS) are excited using a nonlinear electrostatic field. Due to the nonlinearity, the frequency of the device response to a step input depends on the input magnitude. As a result, traditional shaping techniques which are based on linear theory fail to provide good performance over the whole voltage range. In this paper, we develop a new methodology fo...
Micro-channel plate ~MCP! was used to intensify the image on the fluorescent screen in reflection high-energy electron diffraction. The primary electron current could be reduced by four orders of magnitude to get the image of the same intensity as in the measurement without MCP. The reduction of electron beam enabled observation of ionic crystal surfaces without causing electrolysis and chargin...
We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted secondharmonic wavefront is perfectly controlled. These concepts are demonstrated experimentally by the fa...
A novel beam position monitor, operated at zero bias voltage, based on high-quality chemical-vapor-deposition single-crystal Schottky diamond for use under intense synchrotron X-ray beams was fabricated and tested. The total thickness of the diamond thin-film beam monitor is about 60 µm. The diamond beam monitor was inserted in the B16 beamline of the Diamond Light Source synchrotron in Harwell...
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