Diffraction-enhanced X-ray imaging under low-temperature conditions: Non-destructive observations of clathrate gas hydrates

Satoshi Takeya, Kazumasa Honda, Yoshito Gotoh, Akio Yoneyama, Kazuhiro Ueda, Atsushi Miyamoto, Takeo Hondoh, Akira Hori, Duo Sun, Ryo Ohmura, Kazuyuki Hyodo, Tohoru Takeda

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Diffraction-enhanced imaging (DEI) is a phase-contrast X-ray imaging technique suitable for visualizing light-element materials. The method also enables observations of sample-containing regions with large density gradients. In this study a cryogenic imaging technique was developed for DEI-enabled measurements at low temperature from 193 K up to room temperature with a deviation of 1 K. Structure-II air hydrate and structure-I carbon dioxide (CO2) hydrate were examined to assess the performance of this cryogenic DEI technique. It was shown that this DEI technique could image gas hydrate coexisting with ice and gas bubbles with a density resolution of about 0.01 g cm-3 and a wide dynamic density range of about 1.60 g cm-3. In addition, this method may be a way to make temperature-dependent measurements of physical properties such as density.

Original languageEnglish
Pages (from-to)1038-1042
Number of pages5
JournalJournal of Synchrotron Radiation
Volume19
Issue number6
DOIs
Publication statusPublished - 2012 Nov 1

Keywords

  • X-ray interferometric imaging
  • clathrate hydrate
  • diffraction-enhanced imaging
  • non-destructive imaging
  • phase-contrast imaging

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Instrumentation

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