The manipulation of samples with micro manipulators sharps in the normal axis to the observation plane is practically blind in microscopy focused ion beam (FIB) mono beam. The application of a negative potential to the manipulator sharp has been considered, which causes differences of electrical potential between the detector and the sample holder, generating an electric field between the sharp...

The tidal gravitational field of galaxy clusters causes a coherent distortion of the images of background sources. Since the distribution of image distortions, namely the shear field, traces the local gravitational potential of a deflector, it can be used to reconstruct the twodimensional mass distribution of clusters of galaxies. Moreover, the shear field can provide unique information on the ...

Using an experimental scheme based on a vertically deflecting rf deflector and a horizontally dispersing dipole, we characterize the longitudinal phase space of the beam in the blow-out regime at the UCLA Pegasus rf photoinjector. Because of the achievement of unprecedented resolution both in time (50 fs) and energy (1.0 keV), we are able to demonstrate some important properties of the beams cr...

A solid-state broadband beam deflector is described. This non-mechanical system steers spatially coherent broad band light to a common location in the far field. The components include a liquid crystal grating and achromatic Fourier transformer. The liquid crystal grating employs a polarization modulation scheme which produces a wavelength independent phase shift. The achromatic Fourier transfo...

An 80-MHz train of pulses, each lasting-200 psec, has been switched from the output of a -1-W cw CO 2 laser. The switching element, an uncoated Cr-doped GaAs 6talon, was controlled by the -1-W average power output of an argon-ion laser. Sensitive picosecond switching, pulse differentiation, and contrast enhancement of 10-,im pulses are also demonstrated using high-finesse 6talons. The sensitivi...

In this paper, we studied the impulse turbine of a power station based on ultrasonic flow measurement method. Efficiency tests were carried out nozzle head, needle and deflector disc spring unit before after transformation. The results showed that absolute efficiency transformation was basically same. value economic performance have been improved to certain extent, obtained by using method carr...

Accessories such as joints and terminations represent weak points in HVDC cable systems. The DC field distribution is intimately dependent on the thermal conditions of accessory material properties. Moreover, there no available method to probe charge these conditions. In this work, non-stationary conditions, both thermally electrically, computed considering crosslinked polyethylene (XLPE) insul...