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This review covers several important developments in the field of thermophysics at the European Institute for Transuranium Elements. It comprises six short reports: 1. Development of a 6-colour pyrometer, in which the photon current is measured at six wavelengths using a fibre-optical radiation separator. 2. Measurement of specific heat by means of laser pulse heating. 3. Use of the laser pulse technique on tungsten up to 3600 K and on uranium dioxide up to 8000 K. Results of 200 tests on the latter are presented. 4. Measurement of the spectral emissivity of several refractory metals using the 6-colour pyrometer, both above and below melting point. 5. Measurement of thermal conductivity of molten uranium dioxide. This was carried out on samples heated from above and partially molten. 6. Development of an ultrasound thermometer for use in extremely hostile environments, such as that inside a nuclear reactor at high temperature.

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Authors: HIERNAUT J-P, JRC Karlsruhe (DE);RONCHI C, JRC Karlsruhe (DE);SCHMIDT H-E, JRC Karlsruhe (DE);TASMAN H A, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: Treffen Arbeitskreis Thermophysik, Thüringen (DE), Oct. 14-15, 1991
Availability: Available from (1) as Paper DE 36481 ORA
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