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Cryostat for synchrotron powder diffraction with sample rotation and controlled gas atmosphere in the sample chamber
Author(s) -
Ihringer J.,
Küster A.
Publication year - 1993
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/s0021889892009269
Subject(s) - cryostat , diffraction , powder diffraction , materials science , atmosphere (unit) , optics , sample (material) , helium , rotation (mathematics) , synchrotron , cryogenics , analytical chemistry (journal) , crystallography , chemistry , physics , atomic physics , condensed matter physics , geometry , thermodynamics , superconductivity , mathematics , chromatography , quantum mechanics
The cryostat for 8 < T < 300 K presented here, based on a closed‐cycle cryogenic engine, optimizes the powder‐grain statistics of the sample by the use of a cold sample spinner working within an open helium‐gas atmosphere for thermal contact. The compact design of the cooling stage adapted to the Bragg–Brentano‐type diffraction geometry provides for a large open interval, 0 < 2 Θ < 180°, of diffraction angles. A wide variety of sample holders allows measurements with plane powder samples and thin films at low temperatures under variable orientation.