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

研究成果: Article査読

17 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1038-1042
ページ数5
ジャーナルJournal of Synchrotron Radiation
19
6
DOI
出版ステータスPublished - 2012 11

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 器械工学

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