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2003 Metrologia 40 24-30 doi: 10.1088/0026-1394/40/2/304
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Abstract. A cylindrical blackbody cavity with an internal triangular groove thread and a 60 mm diameter aperture is described. It can be stabilized with a very good accuracy (better than 0.1 K) at temperatures between −10 °C and 50 °C. Its high emissivity is such that its radiance temperature is very near its actual physical temperature. An algorithm combining ray tracing and a Monte Carlo method has been developed to calculate the effective emissivity of this blackbody cavity, which is very close to unity. Its characteristics and performances are described in detail in this paper.
Print publication: Issue 2 (April 2003) |
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