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State primary special standard of the unit of specif c heat of solids in the temperature range from 2 to 300 K GET 79-2020
A. A. Petukhov,
B. G. Potapov, 
V. G. Kytin,
M. Y. Ghavalyan,
L. V. Yurov,
E. G. Aslanyan,
A. N. Shchipunov
V. G. Kytin,
M. Y. Ghavalyan,
L. V. Yurov,
E. G. Aslanyan,
A. N. Shchipunov https://doi.org/10.32446/0368-1025it.2023-3-4-9
Abstract
Need and relevance is shown for precise specific heat measurements of existing and novel synthesized substances and solid materials at low temperatures. Construction, operation principle and the results of metrological investigation are presented for the State primary special Standard of the unit of specifi c heat of solids GET 79-2020. GET 79-2020 is equipped with new improved basic throttle cryostat and cell for heat capacitance measurements providing faster and efficient cooling of measured samples and suppression of parasitic heat fluxes. The ranges of reproduction of the unit of specific heat of solids in GET 79-2020 is 0,03–718 J/(kg·К), and the temperature range is 2–300 K. Method of heat capacitance measurements is described with application of developed cell. Metrological characteristics of GET 79-2020 are investigated. An uncertainty budget is calculated for reproduction of the unit of specific heat. The obtained results significantly expand the temperature range of measurements and the park of working standards for heat capacity measuring instruments verified at GET 79-2020.
About the Authors
A. A. Petukhov
Russian Metrological Institute of Technical Physics and Radio Engineering
Russian Federation
Russian Federation
Aleksey A. Petukhov
Mendeleevo, Moscow region
B. G. Potapov
Russian Metrological Institute of Technical Physics and Radio Engineering
Russian Federation
Russian Federation
Boris G. Potapov
Mendeleevo, Moscow region
V. G. Kytin
Russian Metrological Institute of Technical Physics and Radio Engineering; M. V. Lomonosov Moscow State University
Russian Federation
Russian Federation
Vladimir G. Kytin
Mendeleevo, Moscow region
Moscow
M. Y. Ghavalyan
Russian Metrological Institute of Technical Physics and Radio Engineering
Russian Federation
Russian Federation
Mamikon Yu. Ghavalyan
Mendeleevo, Moscow region
L. V. Yurov
Russian Metrological Institute of Technical Physics and Radio Engineering
Russian Federation
Russian Federation
Lev V. Yurov
Mendeleevo, Moscow region
E. G. Aslanyan
Russian Metrological Institute of Technical Physics and Radio Engineering
Russian Federation
Russian Federation
Edward G. Aslanyan
Mendeleevo, Moscow region
A. N. Shchipunov
Russian Metrological Institute of Technical Physics and Radio Engineering
Russian Federation
Russian Federation
Andrey N. Shchipunov
Mendeleevo, Moscow region
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Review
For citations:
Petukhov A.A., Potapov B.G., Kytin V.G., Ghavalyan M.Y., Yurov L.V., Aslanyan E.G., Shchipunov A.N. State primary special standard of the unit of specif c heat of solids in the temperature range from 2 to 300 K GET 79-2020. Izmeritel`naya Tekhnika. 2023;(3):4-9. (In Russ.) https://doi.org/10.32446/0368-1025it.2023-3-4-9
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