Author： Woolliams E. R. Harrison N. J. Fox N. P.
Publisher： IOP Publishing
ISSN： 0026-1394
Source： Metrologia, Vol.37, Iss.5, 2000-11, pp. : 501-504
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Abstract
A new ultra-high-temperature black body designed and constructed at the All-Russian Research Institute for Optophysical Measurements (VNIIOFI, Russian Federation) has recently been delivered to the National Physical Laboratory (NPL, UK). The black-body cavity consists of a series of pyrolytic-graphite rings and is designed to operate at temperatures of up to 3500 K. Preliminary results show that the cavity uniformity varies with operating temperature and change in shape of cavity bottom. Results of active and passive temperature control are also given.
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