| Zugriffsnummer | 30844 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | A terahertz blackbody radiation standard bases on emissivity measurements and a Monte-Carlo simulation |
| Autor(in); Institution |
Monte, Christian; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
Gutschwager, Berndt; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
Adibekyan, Albert; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
Hollandt, Jörg; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
|
| Quelle/Jahr | Journal of Infrared, Millimeter, and Terahertz Waves: 35 (2014), 8, 649 - 658 |
| ISSN | 1866-6892 (PRINT) ; 1866-6906 (ONLINE) |
| DOI | |
| Verlag | Heidelberg, New York: Springer |
| Zusammenfassung | Blackbody radiators are commonly used metrological standards of spectral radiance and radiation temperature according to Planck's law of thermal radiation. In a well defined geometry of observation they also provide calculable irradiance for the calibration of radiation detectors. Here we describe the metrological characterization of a vacuum variable-temperature blackbody to serve as a source standard for FIR- and THz radiation from 5 μm to 200 μm (60 THz to 1.5 THz). The key quantity of the characterization is the effective spectral emissivity of its cavity. This is determined by angular resolved directional spectral emissivity and directional spectral reflectivity measurements of its wall coating, Aeroglaze Z306. From the reflectivity measurements the diffusity is determined. Spectral emissivity and diffusity in combination with the well known cavity geometry allow the determination of the effective spectral cavity emissivity via a Monte-Carlo ray tracing simulation. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | Creative Commons Attribution License |
| Innovationscluster | Umwelt und Klima |
Zitierung
Monte, C., Gutschwager, B., Adibekyan, A., & Hollandt, J. (2014). A terahertz blackbody radiation standard bases on emissivity measurements and a Monte-Carlo simulation. Journal of Infrared, Millimeter, and Terahertz Waves, 35(8), 649–658. https://doi.org/10.1007/s10762-014-0056-1