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Neutron powder diffraction from samples frozen with quartz wool: hexafluorobenzene
Author(s) -
Baharie E.,
Pawley G. S.
Publication year - 1977
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889877013971
Subject(s) - quartz , hexafluorobenzene , crystallite , materials science , neutron diffraction , powder diffraction , neutron , diffraction , composite material , analytical chemistry (journal) , mineralogy , crystallography , optics , chemistry , chromatography , metallurgy , nuclear physics , physics , molecule , organic chemistry
Freezing of liquid samples in a vanadium can filled with quartz wool is found to be a successful way of preparing samples for neutron powder diffraction. A fairly complicated molecular structure – hexafluorobenzene – was chosen for study and the results of a constrained refinement with the program EDINP show the data to be good. Measurements were taken on the PANDA machine at AERE, Harwell at a temperature of 83 K. The technique should have an advantage over that used at present for the case of plastic crystals where the crystallites are in continual change.