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High-energy X-ray micro-laminography to visualize microstructures in dense planar objects.

Masato Hoshino1, Kentaro Uesugi1, Takuya Imai2

  • 1Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan.

Journal of Synchrotron Radiation
|March 9, 2023
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Summary
This summary is machine-generated.

High-energy X-ray micro-laminography offers a new way to see inside dense objects. This advanced imaging technique clearly visualizes fine details in fossils and other planar materials without tomographic artifacts.

Keywords:
X-ray refraction contrastfossilshigh-energy X-raymicro-laminography

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Area of Science:

  • Materials Science
  • Paleontology
  • Imaging Technology

Background:

  • X-ray micro-tomography struggles with dense planar objects due to artifacts.
  • Observing inner and near-surface structures in such materials requires advanced techniques.

Purpose of the Study:

  • To develop and demonstrate high-energy X-ray micro-laminography for dense planar objects.
  • To overcome limitations of X-ray micro-tomography for specific sample types.

Main Methods:

  • Utilized a high-intensity X-ray beam (110 keV) with a multilayer monochromator.
  • Applied high-energy X-ray micro-laminography to analyze fossilized specimens.
  • Achieved effective pixel sizes of 12.4 µm (wide field) and 4.22 µm (high resolution).

Main Results:

  • Successfully visualized near-surface structures of a compressed fossil cockroach without artifacts.
  • Clearly depicted micro-scale features of a gastropod shell and fossil inclusions.
  • Demonstrated reduced X-ray penetration path length in the matrix, enhancing signal clarity.

Conclusions:

  • High-energy X-ray micro-laminography effectively images dense planar objects, revealing fine structures.
  • This method surpasses X-ray micro-tomography by minimizing artifacts and improving contrast detection.
  • It enables the recognition of subtle details undetectable by conventional tomographic observations.