FIELD: measurement technology. SUBSTANCE: device has source of radiation (laser), optical system and dish for placing sample with window made of crystal with luminescent properties. Diamond in the form of truncated pyramid facing inside of dish with its bigger base is used as crystal. Working luminescent zone with dimensions not exceeding 0.5 x 0.5 which is temperature transducer is formed on this base. Range of measurement of temperature amounts to 45-200 K. EFFECT: improved operational characteristics. 3 dwg
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