Open AccessDiffraction‐enhanced X‐ray imaging under low‐temperature conditions: non‐destructive observations of clathrate gas hydrates
Author(s) -
Takeya Satoshi,
Honda Kazumasa,
Gotoh Yoshito,
Yoneyama Akio,
Ueda Kazuhiro,
Miyamoto Atsushi,
Hondoh Takeo,
Hori Akira,
Sun Duo,
Ohmura Ryo,
Hyodo Kazuyuki,
Takeda Tohoru
Publication year - 2012
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049512033857
Subject(s) - clathrate hydrate , diffraction , hydrate , atmospheric temperature range , materials science , carbon dioxide , resolution (logic) , x ray , cryogenics , analytical chemistry (journal) , chemistry , optics , thermodynamics , physics , organic chemistry , chromatography , artificial intelligence , computer science
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 (CO 2 ) 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.