Abstract
Spectra of thermal emission in polycrystalline Yb2O3, Eu2O3, ruby, and sapphire at resonant laser, laser-thermal, and gas-kinetic excitation are experimentally studied. Spectra of oxides in the visible and near IR regions are superposition of selective and continual spectra. Intensity of selective spectra at transitions between thermally populated electron-vibrational states of the structure and impurity ions is determined by the relation between radiative and nonradiative relaxation. It is found out that continual emission is not related to the chemical composition and micro- and electron structure of the investigated materials, and the temperature dependence of the spectra under thermodynamic equilibrium is described by the Planck function. The results are important for understanding the nature of thermal emission of oxides and for thermometry of hypersonic aerodynamic and thermophotovoltaic materials under extreme conditions.
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REFERENCES
A. N. Magunov, Spectral Pyrometry (Fizmatlit, Moscow, 2012) [in Russian].
V. M. Marchenko, L. D. Iskhakova, A. V. Kir’yanov, V. M. Mashinsky, N. M. Karatun, and E. M. Sholo-khov, “Luminescence and selective heat radiation of Yb2O3 upon the resonant and thermal laser excitation,” Laser Phys. 22 (1), 177–183 (2012). https://doi.org/10.1134/S1054660X11240029
V. M. Marchenko, and Yu. A. Shakir, “Temperature dependence of selective emission intensity of the R 1 line upon laser–thermal heating of ruby,” Opt. Spectrosc. 128 (6), 695–697 (2020). https://doi.org/10.1134/S0030400X20060144
D. D. Ragan, R. Gustavsen, and D. Schiferl, “Calibration of the ruby R 1 and R 2 fluorescence shifts as a function of temperature from 0 to 600 K,” J. Appl. Phys. 72 (12), 5539–5544 (1992). https://doi.org/10.1063/1.351951
H. Sai, H. Yugami, K. Nakamura, N. Nakagawa, H. Ohtsubo, and Sh. Maruyama, “Selective emission of Al2O3/Er3Al5O12 eutectic composite for thermophotovoltaic generation of electricity,” Jpn. J. Appl. Phys. 39 (4R), 1957–1961 (2000). https://doi.org/10.1143/JJAP.39.1957
N. Nakagawa, H. Ohtsubo, Y. Wak, and H. Yugami, “Thermal emission properties of Al2O3/Er3Al5O12 eutectic ceramics,” J. Eur. Ceram. Soc. 25 (8), 1285–1291 (2005). https://doi.org/10.1016/j.jeurceramsoc.2005.01.031
G. A. Bufetova, S. Ya. Rusanov, V. F. Seregin, Yu. N. Pyrkov, V. A. Kamynin, and V. B. Tsvetkov, “Temperature distribution across the growth zone of sapphire(Al2O3) and yttrium–aluminum garnet (YAG) single crystal fibers,” J. Cryst. Growth. 433, 54–58 (2016). https://doi.org/10.1016/j.jcrysgro.2015.06.010
M. Plank, Introduction to Theoretical Physics, Vol. 5: Theory of Heat (Macmillan, London, 1949).
L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 8: Electrodynamics of Continuous Media (Pergamon, London, 1960).
B. Bitnar, W. Durisch, and R. Holzner, “Thermophotovoltaics on the move to applications,” Appl. Energy. 105, 430 (2013). https://doi.org/10.1016/j.apenergy.2012.12.067
P. B. Oliete, A. Orera, M. L. Sanjuàn, and R. I. Merino, “Selective thermal emission of directionally solidified Al2O3/Y3–xErxAl5O12 eutectics: Influence of the microstructure, temperature and erbium content,” Sol. Energy Mater. Sol. Cells. 174, 460–468 (2018). https://doi.org/10.1016/j.solmat.2017.09.031
E. Sakr and P. Bermel, “Thermophotovoltaics with spectral and angular selective doped-oxide thermal emitters,” Opt. Express. 25 (20), A880–A895 (2017). https://doi.org/10.1364/OE.25.00A880
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Marchenko, V.M. Selective and Continual Thermal Emission of Polycrystalline Yb2O3, Eu2O3, Ruby, and Sapphire. Phys. Wave Phen. 29, 199–203 (2021). https://doi.org/10.3103/S1541308X21030109
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DOI: https://doi.org/10.3103/S1541308X21030109