FIELD: measuring technique.
SUBSTANCE: method comprises steps of introducing analyzed sample in measuring cell 4 placed into cryostat-provided chamber 1; turning on laser irradiator 6 and corresponding to it optical detector 7 for passing optical beam through analyzed sample; storing intensity values of light received by optical detector 7; gradually lowering temperature in chamber 1 and then again increasing it for registering curve showing change of intensity values of light received by detector 7 as temperature function. According to registered curve crystal disappearance point is determined.
EFFECT: enhanced accuracy and reliability of measurement results.
7 cl, 4 dwg
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