Spektroskopische Temperaturmessung

Bernhard, Frank

doi:10.1007/978-3-642-18895-4_15

Cited by 13 publications

(21 citation statements)

References 320 publications

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“…Methods of emissivity measurements and corrections or measurement arrangements to reduce the influence of the emissivity are described in the literature, e.g. [1,2]. In many cases test samples identical with the measurement object cannot be prepared for emissivity measurements or emissivity changes have to be expected during the process.…”

Section: Introductionmentioning

confidence: 99%

Emissivity reference paints for high temperature applications

2008

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Section: Introductionmentioning

confidence: 99%

Emissivity reference paints for high temperature applications

2008

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“…Seebeck measurements were performed using a direct method applying two type K thermocouples 21 . The thermovoltage U was picked up between the alumel legs and corrected for S alumel = −19 µV/K for the whole temperature range investigated here 22 . S was deduced from the slope of ∆U vs. ∆T , maintaining a constant mean temperature.…”

mentioning

confidence: 99%

Laser-sintered thin films of doped SiGe nanoparticles

Stoib

Langmann

Matich

et al. 2012

Applied Physics Letters

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We present a study of the morphology and the thermoelectric properties of short-pulse laser-sintered (LS) nanoparticle (NP) thin films, consisting of SiGe alloy NPs or composites of Si and Ge NPs. Laser-sintering of spin-coated NP films in vacuum results in a macroporous percolating network with a typical thickness of 300 nm. The Seebeck coefficient is independent of the sintering process and typical for degenerate doping. The electrical conductivity of LS films rises with increasing temperature, best described by a power-law and influenced by two-dimensional percolation effects.Comment: 4 pages, 4 figure

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“…This relation is describes in equation (1) and can be found in [11]. Figure 2 shows spectral emissivity of a plane aluminum surface, which is coated with a functional high emissivity black coating subsequent to a conventional machining and cleaning procedure.…”

Section: Enhancement Of the Effective Spectral Emissivitymentioning

confidence: 99%

Compact blackbody calibration sources for in-flight calibration of spaceborne infrared instruments

Scheiding

Driescher

Walter

et al. 2017

International Conference on Space Optics — ICSO 2014

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High-emissivity blackbodies are mandatory as calibration sources in infrared radiometers. Besides the requirements on the high spectral emissivity and low reflectance, constraints regarding energy consumption, installation space and mass must be considered during instrument design. Cavity radiators provide an outstanding spectral emissivity to the price of installation space and mass of the calibration source. Surface radiation sources are mainly limited by the spectral emissivity of the functional coating and the homogeneity of the temperature distribution. The effective emissivity of a "black" surface can be optimized, by structuring the substrate with the aim to enlarge the ratio of the surface to its projection.Based on the experiences of the Mercury Radiometer and Thermal Infrared Spectrometer (MERTIS) calibration source MBB3, the results of the surface structuring on the effective emissivity are described analytically and compared to the experimental performance. Different geometries are analyzed and the production methods are discussed. The high-emissivity temperature calibration source features values of 0.99 for wavelength from 5 µm to 10 µm and emissivity larger than 0.95 for the spectral range from 10 µm to 40 µm.

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Spektroskopische Temperaturmessung

Cited by 13 publications

References 320 publications

Emissivity reference paints for high temperature applications

Emissivity reference paints for high temperature applications

Laser-sintered thin films of doped SiGe nanoparticles

Compact blackbody calibration sources for in-flight calibration of spaceborne infrared instruments

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