X-ray Energy Dependence of the Properties of the Focused Beams Produced by Polycapillary X-ray Lens
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- MATSUDA Akinori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka City University
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- NODERA Yuta
- Department of Applied Chemistry, Graduate School of Engineering, Osaka City University
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- NAKANO Kazuhiko
- Department of Applied Chemistry, Graduate School of Engineering, Osaka City University JST (Japan Science and Technology Agency) Innovation Plaza Osaka
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- TSUJI Kouichi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka City University JST-PRESTO (Precursory Research for Embryonic Science and Technology)
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Abstract
We investigated x-ray energy distribution in an x-ray microbeam produced by a polycapillary x-ray lens in combination with a sealed-type x-ray tube. This polycapillary x-ray lens has an output focal distance (OFD) of approximately 15 mm. The size of the x-ray microbeam and its OFD were estimated by using a wire scanning method. In our case, the sizes of the x-ray microbeams at the output focal distance were 49 µm for Mo Lα, 36 µm for W Lα, and 28 µm for Mo Kα. The spot sizes depend on the energy of the x-ray fluorescence. The reason for the energy dependence is that x-ray capillary optics is based on the principle of propagation through glass capillaries by means of x-ray total external reflection. The evaluated OFD values of Mo Lα and Mo Kα were slightly changed in 17 µm. However, a deviation of 100 µm from the OFD caused only a 3% increase of the focal spot size. Therefore, we concluded that the OFD showed no significant dependence on x-ray energy.
Journal
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- Analytical Sciences
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Analytical Sciences 24 (7), 843-846, 2008
The Japan Society for Analytical Chemistry
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Details 詳細情報について
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- CRID
- 1390001204256797312
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- NII Article ID
- 130004441669
- 10025204792
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- NII Book ID
- AA10500785
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 9566244
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed