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A small 50 K cooling device for a quarter‐circle Eulerian cradle diffractometer
Author(s) -
Zobel D.,
Luger P.
Publication year - 1990
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/s0021889890000358
Subject(s) - eulerian path , refrigerator car , diffractometer , quarter (canadian coin) , materials science , mechanical engineering , mathematics , engineering , composite material , mathematical analysis , lagrangian , scanning electron microscope , archaeology , history
A one‐stage He refrigerator (Displex CS1003) has been modified and installed on a quarter‐circle Eulerian cradle of 250 mm diameter (AED Siemens) and has been operated down to 50 K. The mechanical interface, which can easily be mounted, is described as well as some alignment problems. The device is suitable for any Eulerian cradle 250 mm or larger. Structure redeterminations of two organic compounds were carried out at 52 K. R values of 2.2 and 3.6% were obtained and proved the quality of this set up.