Theoretical aspect of X-ray phase microscopy with transmission gratings

研究成果: Conference contribution

抄録

One of the advantages of X-ray grating interferometry is that it can work with spherical-wave illumination of X-rays. This means that the interferometry can be combined with an X-ray imaging microscopy to achieve a high spatial resolution. We have developed three types of X-ray phase imaging microscopies, which are based on a self-imaging phenomenon called the Talbot effect. The first type is an X-ray imaging microscopy just combined with X-ray Talbot interferometry, where two transmission gratings are used. The other two are novel X-ray phase imaging microscopies, where the self-image of a transmission grating is highly magnified and resolved by an image detector: one has been achieved by a single X-ray source and the other is what we call Lau-type X-ray phase imaging microscopy, where an array of mutually incoherent X-ray sources has been used. These two microscopies have overcome several problems of the Talbot-interferometer-type X-ray imaging microscopy, i.e., they provide a phase difference image (twin phase images separated by a specific distance) and hence have high sensitivities and high spatial resolutions. Quantitative phase imaging even for non-weak-phase objects has also been performed that are difficult to be achieved by the widely used Zernike phase-contrast microscopy. In this paper, we outline a theoretical description of the three types of the X-ray imaging microscopes using transmission gratings as well as the corresponding three types of X-ray projection microscopes.

本文言語English
ホスト出版物のタイトルInternational Workshop on X-Ray and Neutron Phase Imaging with Gratings
ページ144-149
ページ数6
DOI
出版ステータスPublished - 2012
外部発表はい
イベントInternational Workshop on X-Ray and Neutron Phase Imaging with Gratings, XNPIG 2012 - Tokyo, Japan
継続期間: 2012 3月 52012 3月 7

出版物シリーズ

名前AIP Conference Proceedings
1466
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

OtherInternational Workshop on X-Ray and Neutron Phase Imaging with Gratings, XNPIG 2012
国/地域Japan
CityTokyo
Period12/3/512/3/7

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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