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arXiv physics/9903003physics.acc-ph
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衍射对光学渡越辐射空间分辨率的限制

Considerations on the Diffraction Limitations to the Spatial Resolution of Optical Transition Radiation

X. Artru, R. Chehab, K. Honkavaara, A. Variola

摘要:

利用光学渡越辐射(OTR)在高能量(multiGeV)光束诊断的兴趣,激发了理论和实验研究衍射对可达到的分辨率所带来的限制。本文介绍了利用光学透射比计算光学装置中衍射效应的方法。计算了望远系统中OTR的衍射图样,并考虑了OTR的径向偏振。得到的衍射图案相比,由其他作者获得的图案和不同的参数上的形状和上的OTR衍射图案的大小的影响进行了研究。的衍射图案的形状上的径向偏振所起的主要作用进行了概述。本文还提出了一种计算OTR衍射图的方法

英文摘要:

The interest in using optical transition radiation (OTR) in high energy (multiGeV) beam diagnostics has motivated theoretical and experimental investigations on the limitations brought by diffraction on the attainable resolution. This paper presents calculations of the diffraction effects in an optical set-up using OTR. The OTR diffraction pattern in a telescopic system is calculated taking into account the radial polarization of OTR. The obtained diffraction pattern is compared to the patterns obtained by other authors and the effects of different parameters on the shape and on the size of the OTR diffraction pattern are studied. The major role played by the radial polarization on the shape of the diffraction pattern is outlined. An alternative method to calculate the OTR diffraction pattern is also sketched

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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