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首页> 外文期刊>Review of Scientific Instruments >Tapered image charge detector for measuring velocity distributions of submicrometer particle scattering
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Tapered image charge detector for measuring velocity distributions of submicrometer particle scattering

机译：Tapered image charge detector for measuring velocity distributions of submicrometer particle scattering

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摘要

A novel detector for measuring the post-impact velocities (trajectory and speed) of charged submicrometer particles is presented. A stack of tapered cylindrically symmetric electrodes connected to a set of image charge detection circuits is used in conjunction with an image-charge-sensitive target to measure the incident velocity and scattered trajectories of charged particles following impact with the target. This particle detector is used in conjunction with a mass, charge, and energy-selected source of collimated charged particles. Polystyrene latex spheres were used to characterize the performance of the detector, and examples of scattering trajectories are analyzed to demonstrate detector functionality. Measurements of the coefficient of restitution for 500 nm diameter tin particles are also reported and compared with previous measurements performed with a simpler image-charge detector. Finally, the angular distribution for 500 nm tin particles scattering from highly polished molybdenum at an incident velocity of 150 m/s is reported. Published under license by AIP Publishing.

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