Emissivity of group V elements periodic table in a wide temperature range

The results of a study of the normal integral emissivity of the elements of group V of the Periodic system in the solid–liquid temperature range are presented. The choice of research objects – metallic vanadium, antimony and bismuth, is justified by the absence of data on the emissivity of these elements in the open press. The measurement method is absolute radiation. The experimental data obtained on the normal integral emissivity within each of the phases of the state of the elements monotonically increase. The emissivity jumps are positive or negative and depend on the individual physico-chemical parameters of the studied elements. A theoretical calculation of the emissivity of the studied elements according to the Foot approximation was carried out and analyzed.