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|Title:||X-ray focusing test and x-ray imaging test by a microcapillary x-ray lens at an undulator beamline|
Dudchik, Yu. I.
Kolchevsky, N. N.
Komarov, F. F.
|Keywords:||ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика|
|Citation:||Review of sciientific instruments. - № 11. - 4161-4167.|
|Abstract:||A ﬁrst focusing test of the undulator radiation at SPring-8 has been done using two types of x-ray refractive lenses in thin glass capillaries. One ~lens No. 1! contained bubbles in a glue whereas the other ~lens No. 2! contained bubbles in glycerol. The capillaries had inner diameters of 0.2 and 0.8 mm, respectively. Using x rays of 17–18 keV, the undulator source image was investigated at the focal plane. The spherical aberrations and the ﬁeld distortions were carefully examined by taking the images of a gold mesh. Lens No. 1 had an advantage of high transmissivity in the hard x-ray region ~18% at 18 keV! and high tolerance to severe radiation damage, e.g., ;531012 photons/s/0.03 mm2 of the 18 keV x rays for an exposure time of 1 h. On the other hand, lens No. 2 had an advantage of a large aperture, 0.8 mm, and a small ﬁeld distortion, e.g., less than 10% inside a diameter of 300 mm.|
|Appears in Collections:||Статьи сотрудников НИИ ПФП|
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