We consider the physical and technical aspects of the transition to a new definition of the temperature unit as a physical quantity, reveal the features of the implementation of an absolute method for its reproduction in radiometric thermometry, and outline the physical foundations of the method and its theoretical substantiation. A comprehensive analysis of the procedure for reproducing the temperature unit according to its new definition is given, features of the implementation of the method in reference radiometric thermometry are shown, and an estimate of the measurement error is given.

Typically, an English full text is available in about 1 month from the date of publication of the original article.

Keywords: thermodynamic temperature, absolute method, Planck radiation, radiometric thermometry, measurement, error, asymmetry, spectra PACS: 06.20.−f, 06.30.−k, 07.20.−n (all) DOI: 10.3367/UFNe.2023.10.039571 URL: https://ufn.ru/en/articles/2024/7/d/ Citation: Khodunkov V P "Physical and technical aspects of radiometric thermometry from the standpoint of a new definition of the temperature unit" Phys. Usp. 67 (7) (2024) Received: 21st, June 2023, revised: 23rd, August 2023, accepted: 2nd, October 2023 Оригинал: Ходунков В П «Физико-технические аспекты радиометрической термометрии с позиций нового определения единицы температуры» УФН 194 753–764 (2024); DOI: 10.3367/UFNr.2023.10.039571