X-ray fluorescence holography

X-ray fluorescence holography (XFH) is a holography method with atomic resolution based on atomic fluorescence.[1] It is a relatively new technique that benefits greatly from the coherent high-power X-rays available from synchrotron sources, such as the Japanese SPring-8 facility.

Imaging

Fluorescent X-rays are scattered by atoms in a sample and provide the object wave, which is referenced to non-scattered X-rays. A holographic pattern is recorded by scanning a detector around the sample, which allows researchers to investigate the local 3D structure around a specific element in a sample.[2][3]

Applications

It is useful for investigating the effects of irradiation on high temperature superconductors.

Twin picture

One of the criticisms for this method is that it suffers from twin images. D. Gabor. Barton proposed that reconstructed phased images of holograms will suppress twin images effects.[4]

References
  1. Hayashi, Kouichi; Happo, Naohisa; Hosokawa, Shinya; Hu, Wen; Matsushita, Tomohiro (2012). "X-ray fluorescence holography". Journal of Physics: Condensed Matter. 24 (9): 093201. Bibcode:2012JPCM...24i3201H. doi:10.1088/0953-8984/24/9/093201. ISSN 0953-8984. PMID 22318258.
  2. Hayashi, K. (2003). "3D atomic imaging of SiGe system by X-ray fluorescence holography". Journal of Materials Science: Materials in Electronics. 14 (5/7): 459–462. doi:10.1023/A:1023993911437. ISSN 0957-4522. S2CID 134765278.
  3. Chukhovskii, F. N.; Poliakov, A. M. (2003). "X-ray fluorescence holography: a novel treatment for crystal structure determination". Acta Crystallographica Section A. 59 (2): 109–116. doi:10.1107/S0108767302022274. ISSN 0108-7673. PMID 12604848.
  4. Xie, Honglan; Chen, Jianwen; Gao, Hongyi; Xiong, Shisheng; Xu, Zhizhan (2004). "Removing twin images in X-ray fluorescence holography". Optics Communications. 229 (1–6): 123–129. Bibcode:2004OptCo.229..123X. doi:10.1016/j.optcom.2003.10.033. ISSN 0030-4018.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.