## What is/are Radiation Thermometry?

Radiation Thermometry - Radiation thermometry methods used in powder bed fusion (PBF) additive manufacturing for in situ monitoring and control and quality assurance are increasing in importance.^{[1]}In testing explosion flame temperature with radiation thermometry, there is relatively great deviation of empirical value of flame emissivity from flame combustion mechanism.

^{[2]}The thereby electrothermal Joule heating to the lattices can be visualized directly by the noncontact infrared radiation thermometry with the hypothetic Planck distribution at a single characteristic temperature.

^{[3]}This Letter proposes light-field multi-spectral radiation thermometry based on an unfocused light-field camera, which can simultaneously record directions and intensities of incident rays.

^{[4]}In this study, we investigated the humidity dependence on the thermal conduction properties of bacterial cellulose films by using a custom-made sealing chamber compatible with the laser spot periodic heating radiation thermometry method for measuring thermal diffusivity.

^{[5]}However, the radiative characteristics of Inconel 718 alloy change due to surface oxidation and cause large deviation in temperature field computation and radiation thermometry.

^{[6]}With the application of the active infrared laser radiation thermometry, the surface temperature can be obtained independently of the target emissivity.

^{[7]}Radiation thermometry is a mature technology that is applicable to various industrial fields.

^{[8]}Nowadays, the CEM Radiation Thermometry Laboratory disseminates and maintains the International Temperature Scale of 1990 (ITS-90) from the Ag fixed point (961.

^{[9]}The infrared detector is the most important component within any radiation thermometry based system, with its choice determining the wavelength, response time and, ultimately, the temperature measurement capabilities of the instrument.

^{[10]}In this paper, a mathematical radiative heat transfer model combined with an analytical radiation thermometry model was developed.

^{[11]}To investigate the coupling effects of reflection and absorptive gas mixture on surface temperature determined by single color pyrometer, an analytical radiation thermometry model combined with a mathematical radiative heat transfer model, which simultaneously considering both the reflected ambient radiation and the gas absorption and emission of radiation, was established in this paper.

^{[12]}The effective thermal conductivity of the n+-Ga2O3/n+-poly-SiC bonded substrate and the electrical resistance at the heterointerface were characterized by using periodic heating radiation thermometry and analyzing vertical current–voltage characteristics, respectively.

^{[13]}The emissivity change due to oxidation of the Ni-based alloys that are used for turbine blades in severe environment will cause large errors in radiation thermometry.

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## Analytical Radiation Thermometry

In this paper, a mathematical radiative heat transfer model combined with an analytical radiation thermometry model was developed.^{[1]}To investigate the coupling effects of reflection and absorptive gas mixture on surface temperature determined by single color pyrometer, an analytical radiation thermometry model combined with a mathematical radiative heat transfer model, which simultaneously considering both the reflected ambient radiation and the gas absorption and emission of radiation, was established in this paper.

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## Heating Radiation Thermometry

In this study, we investigated the humidity dependence on the thermal conduction properties of bacterial cellulose films by using a custom-made sealing chamber compatible with the laser spot periodic heating radiation thermometry method for measuring thermal diffusivity.^{[1]}The effective thermal conductivity of the n+-Ga2O3/n+-poly-SiC bonded substrate and the electrical resistance at the heterointerface were characterized by using periodic heating radiation thermometry and analyzing vertical current–voltage characteristics, respectively.

^{[2]}

## radiation thermometry model

In this paper, a mathematical radiative heat transfer model combined with an analytical radiation thermometry model was developed.^{[1]}To investigate the coupling effects of reflection and absorptive gas mixture on surface temperature determined by single color pyrometer, an analytical radiation thermometry model combined with a mathematical radiative heat transfer model, which simultaneously considering both the reflected ambient radiation and the gas absorption and emission of radiation, was established in this paper.

^{[2]}

## radiation thermometry method

Radiation thermometry methods used in powder bed fusion (PBF) additive manufacturing for in situ monitoring and control and quality assurance are increasing in importance.^{[1]}In this study, we investigated the humidity dependence on the thermal conduction properties of bacterial cellulose films by using a custom-made sealing chamber compatible with the laser spot periodic heating radiation thermometry method for measuring thermal diffusivity.

^{[2]}