An instrument has been developed to avoid the rotation of large electron sources and detectors in quantum single particle scattering experiments. The rotation of an electron beam has been achieved by combining three small cylindrical electrostatic electron energy analyzers in series such that the first analyzer is fixed and the other two rotate together around the exit axis of the first; it is ...

This is an exploratory study of jet noise reduction using fan flow deflectors in a nozzle shaped like the exhaust of a separate-flow turbofan engine with bypass ratio 4.8. The deflectors directed the bypass plume downward and/or sideward relative to the core plume. Vaneand wedge-type deflectors were tested. The noise reduction achieved by the vane deflector was strong in the downward direction ...

New high current accelerator facilities like proposed for the HIDIF driver require a beam with such a high brilliance, which can not be produced by a single pass rf-linac. The increase in brightness in such a driver linac is done by several funneling stages at low energies, in which two identically bunched ion beams are combined to a single beam with twice the frequency, current and brightness....

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 ...

Nonmechanical beam deflectors, particularly acousto-optical and electro-optical deflectors, are being considered for the access and tracking functions of a magneto-optic recording head. In this report, the suitability of electro-optic deflectors for these functions is explored. For applications requiring modest deflection, electro.optic deflectors require less power and exhibit higher optical t...

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...