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- Title
Spectral pyrometry of the objects with hot spots.
- Authors
Batanov, G.; Berezhetskaya, N.; Kop'ev, V.; Kossyi, I.; Magunov, A.
- Abstract
Optical emission spectra of microwave discharges at the powder mixture surface are experimentally recorded, indicating spatial temperature nonuniformity the within the field of vision. Within the field of vision, the maximal and minimal temperature values calculated from the continuous spectrum (wavelength range 380-620 nm) differ by 20-25%. Modeling of the integral emission spectra of a heated surface with hot spots is performed. Spectral pyrometry of the objects with nonuniform temperature, when used within a narrow spectral interval, gives no possbility of determining the exact nature of the measured temperature because the temperature calculated from this spectrum may differ substantially from both averaged and maximal values. To determine the averaged and maximal temperature, it is necessary to significantly widen the recorded spectral interval.
- Subjects
PYROMETRY; VISUAL fields; FIBER optics; EMISSION spectroscopy; PHOTOEMISSION
- Publication
High Temperature, 2011, Vol 49, Issue 5, p731
- ISSN
0018-151X
- Publication type
Article
- DOI
10.1134/S0018151X11050026