Abstract
Recording of a sequence of thermal-radiation spectra allows determination of a nonstationary temperature T(t) without using the data on the emissivity of an object. For a КЭФ-4.5 silicon single crystal heated with radiation from a continuous-wave Nd:YAG laser (λ = 1.064 μm), sequences of hundreds of emission spectra in wavelength ranges of λ = 350–760 nm and λ = 650–1000 nm were recorded at a signal storage time of a CCD array of τ = 15–35 ms and a frequency of recording spectra of f ≈ 30–66 Hz. The spectra were automatically processed, and the dependences of the crystal temperature on the time after the irradiation onset were obtained in the range T ≈ 1100–1450 K.
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Original Russian Text © A.N. Magunov, A.O. Zakharov, B.A. Lapshinov, 2012, published in Pribory i Tekhnika Eksperimenta, 2012, No. 1, pp. 143–148.
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Magunov, A.N., Zakharov, A.O. & Lapshinov, B.A. Measurements of nonstationary temperatures by the spectral pyrometry method. Instrum Exp Tech 55, 134–139 (2012). https://doi.org/10.1134/S0020441212010095
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DOI: https://doi.org/10.1134/S0020441212010095