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Temperature and Synchrotron Radiation

Division 7

Highest accuracy and reliability of the realisation, maintenance and dissemination of units of radiation physics and thermodynamics, especially of the quantities spectral power of electromagnetic radiation, temperature, heat, pressure in vacuum. Development of new methods and techniques even in extreme areas, Advisory service and development of measuring systems for new metrological challenges


In order to become independent of the embodied standard of the international prototype of the kilogram which is kept in Paris, the SI unit of the kilogram is to be redefined by the determination of a numerical value of Planck's constant. For this purpose, the number of silicon atoms in a monocrystalline silicon sphere (weight: one kilogram) is determined at PTB within the scope of the Avogadro...

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One focus of the technical work in the EUV Radiometry Working Group is the metrological support rendered to the German and European supply industry for semiconductor manufacturing in the development of EUV lithography in a great number of cooperation agreements. In 1998, the cooperation with Carl Zeiss SMT GmbH set the starting point for this field of work and has, since then, formed the basis for...

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Für die Steigerung der Energieeffizienz thermischer Kraftwerke kommt es entscheidend darauf an, die Messunsicherheit bei der Warmwasser-Volumenstrommessung zu senken. Die derzeitige Unsicherheit von etwa 2 % lässt keine optimale Kraftwerk-Regelung zu und limitiert so den Wirkungsgrad. Deshalb wurde in der PTB ein laseroptisches Volumenstrom-Normal (LVN) entwickelt, mit dem Messgeräte mit einer...

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