SURPLATINE POUR ETUDES THERMODYNAMIQUES SOUS MICROSCOPE

L'INVENTION CONCERNE UNE SURPLATINE DESTINEE AUX ETUDES DE PHENOMENES TRANSITOIRES, POUR LESQUELLES LA PRESSION ET LA TEMPERATURE PEUVENT VARIER SUR DE TRES LARGES PLAGES.SELON L'INVENTION, LA PLATINE COMPORTE UNE ENVELOPPE EXTERIEURE ETANCHE 1 MUNIE DE FENETRES OPTIQUES 6, 7, UNE ENCEINTE INTERIEURE ETANCHE 8 DANS LAQUELLE EST DEFINI UN VOLUME EXPERIMENTAL 9 ET COMPRENANT EGALEMENT DEUX FENETRES OPTIQUES 15, 16, ET DES MOYENS POUR FIXER ETOU CONTROLER LA TEMPERATURE ET LA PRESSION REGNANT DANS CE VOLUME.APPLICATION NOTAMMENT EN GEOLOGIE, MINERALOGIE, CRISTALLOGRAPHIE ET PHYSIQUE DES SOLIDES. The invention relates to a stage assembly for use on a microscope when studying transient phenomena in which pressure and temperature may vary over very large ranges. Such an instrument is applicable to geology, mineralogy, crystallography, and solid state physics, for example. In accordance with the invention the stage assembly comprises a sealed outer envelope (1) having optical windows (6, 7), a sealed inner enclosure (8) in which an experiment volume (9) is defined and likewise having two optical windows (15, 16), and means for fixing and/or monitoring the temperature and the pressure in said experimental volume.