Journal
HIGH PRESSURE RESEARCH
Volume 24, Issue 4, Pages 423-445Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/08957950412331331718
Keywords
laser heating; high pressure; high temperature; spectroradiometry; emissivity
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We have spectrorachometrically measured a suite of temperatures between 761 +/- 128 and 7307 +/- 958 K in the laser-heated diamond cell using Br-2 sample material. Critical evaluation of each spectrum and the dataset as a whole in comparison with synthetic data confirms the high temperatures and demonstrates the observable effects of temperature gradients and wavelength-dependent emissivity or absorbance on a single spectrum. In addition, we quantitatively demonstrate the use of a sliding two-color pyrometer analysis to produce a consistent and meaningful estimate of uncertainty of spectral temperature measurements.
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