Techniques for neutron diffraction on solidified gases to 10 GPa and above: Applications to ND3phase IV
作者:
S. Klotz,
M. Gauthier,
J. M. Besson,
G. Hamel,
R. J. Nelmes,
J. S. Loveday,
R. M. Wilson,
W. G. Marshall,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 67,
issue 9
页码: 1188-1190
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.115002
出版商: AIP
数据来源: AIP
摘要:
Neutron powder diffraction can provide important structural information on hydrogenous compounds which are gases at ambient temperature. For high pressure studies, however, this technique has been seriously limited by the fact that it was impossible (a) to load such gases in large volume devices and (b) to compress them to elevated pressures above some 1 GPa. In this letter we show that, using a previously described pressure cell, a wide range of gaseous samples may be loaded and compressed to ∼10 GPa with standard tungsten carbide anvils. We illustrate the effectiveness of the technique with neutron powder diffraction data recently collected on deuterated ammonia ND3phase IV, where accurate structural data were obtained after a few hours collection time. ©1995 American Institute of Physics.
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