The effect of magnetic quadrupole lens hysteresis on the focusing of an ion beam with variable energy in a nuclear scanning microprobe

被引：0
|
作者：
A. V. Romanenko
A. G. Ponomarev
机构：
[1] National Academy of Sciences of Ukraine,Institute of Applied Physics
来源：
Technical Physics Letters | 2013年 / 39卷
关键词：
Beam Energy; Technical Physic Letter; Probe Dimension; Secondary Electron Emission; Residual Magnetic Induction;
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摘要：
The influence of the hysteresis of magnetic quadrupole lenses on the transverse size of a beam focused on the target in a probe-forming system with a separated Russian quadruplet configuration has been experimentally studied. The measurements were performed in a nuclear scanning microprobe using a proton beam with the ion energy varied within 0.8–1.6 MeV. The beam size was determined by processing the secondary electron emission profiles measured during scanning of a calibrated micrometric square mesh. A new approach is proposed that allows a beam with variable energy in the nuclear microprobe to be focused so as to keep the probe size within preset limits.
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页码：317 / 320
页数：3
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