FIELD: physics.
SUBSTANCE: device consists of a cylindrical vacuum chamber in which there is a cooling screen, material test specimen with a heater, fixed on a rotating suspension, and an optical measuring system, consisting of a monochromator, modulator, infrared lenses and a radiation receiver. The sample is heated either by infrared radiation or by electrical current due to ohmic resistance.
EFFECT: measurement of angular dependencies of spectral ratios of radiation.
2 dwg
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