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Performance of polycapillary x‐ray lens for x‐ray sources with various spot sizes
Author(s) -
Sun Tianxi,
Liu Zhiguo,
Ding Xunliang
Publication year - 2007
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.988
Subject(s) - optics , lens (geology) , x ray , physics , transmission (telecommunications) , focal length , divergence (linguistics) , hot spot (computer programming) , materials science , computer science , telecommunications , operating system , linguistics , philosophy
The performance of a polycapillary x‐ray lens (PCXRL) is related to the spot size of the x‐ray source. The transmission efficiency of the PCXRL decreases generally with the increase of the x‐ray source spot size. Both the output focal spot size of a focusing PCXRL and the divergence of a parallel PCXRL increase with increasing source spot size. A large source spot size results in more ‘escape halo’, which affects the measured transmission efficiency and the measured output focal spot size. Copyright © 2007 John Wiley & Sons, Ltd.