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A miniature furnace suitable for X‐ray Weissenberg photography up to 1000°C
Author(s) -
Viswamitra M. A.,
Jayalakshmi K.,
Kalyani V.
Publication year - 1970
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/s0021889870006106
Subject(s) - thermocouple , materials science , quartz , coaxial , crystal (programming language) , optics , composite material , analytical chemistry (journal) , chemistry , mechanical engineering , physics , computer science , engineering , programming language , chromatography
A miniature heater unit suitable for routine collection of X‐ray data from single crystals up to 1000°C, with room temperature Weissenberg camera, without any need for water‐cooling of the film‐cassette is described. The furnace is current‐heated and essentially consists of two coaxial platinum wire wound silica tubes, held on a quartz bracket, such that there is a 4 mm X‐ray gap between them. The crystal placed at the middle of the gap is heated primarily by the radiant heat from the furnace. The specimen temperature is measured by a built‐in Pt/Pt‐13% Rh thermocouple previously calibrated in situ against the melting of different substances. The thermal gradient over a crystal, 1 mm long, is around 5°C at 800°C. The furnace has the possibility of use up to 1500°C.