Vacuum Variable-Temperature Blackbody VTBB100

Morozova, S. P.; Parfentiev, N. A.; Lisiansky, Boris E.; Sapritsky, Victor I.; Dovgilov, N. L.; Melenevsky, U. A.; Gutschwager, B.; Monte, C.; Hollandt, J.

doi:10.1007/s10765-007-0355-z

Cited by 27 publications

(14 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the Physikalisch-Technische Bundesanstalt (PTB), a reduced-background calibration facility (RBCF) [1][2][3][4] was constructed. The RBCF is intended for the calibration of cryogenic and near-ambient-temperature blackbodies and infrared detector systems under medium vacuum ( p < 10 −2 Pa) or controlled atmosphere conditions and reduced-background radiation (liquid-nitrogencooled radiation shields).…”

Section: Introductionmentioning

confidence: 99%

A Vacuum Infrared Standard Radiation Thermometer at the PTB

et al. 2008

Self Cite

View full text Add to dashboard Cite

A thermal infrared radiation thermometer was jointly developed by the Physikalisch-Technische Bundesanstalt and Raytek GmbH for temperature measurements from −150 • C to 170 • C under vacuum. The radiation thermometer is a purposebuilt instrument to be operated with the PTB reduced-background infrared calibration facility. The instrument is a stand-alone system with an airtight housing that allows operation inside a vacuum chamber, attached to a vacuum chamber, and in air. The radiation thermometer will serve to calibrate thermal radiation sources, i.e., blackbody radiators, by comparing their radiance temperature to that of a variable-temperature reference blackbody inside the reduced-background calibration facility. Furthermore, since it can be operated under vacuum and in air, the instrument also allows the waterand ammonia-heat-pipe reference blackbodies of the PTB low-temperature calibration facility operated in air to be compared with the variable-temperature blackbody operated under vacuum. Finally, provided that sufficient long-term stability is achieved, the instrument shall be used as a transfer radiation thermometer to carry and compare the temperature scale of PTB by means of radiation thermometry to remote-sensing calibration facilities outside PTB. The mechanical, optical, and electrical designs of the instrument are reported. Results of investigations on the temperature resolution, size-of-source effect, and the reference function are given. The heat-pipe blackbodies operating in air are compared to the variable-temperature blackbody operated under vacuum by using the vacuum radiation thermometer.References to commercial products are provided for identification purposes only and constitute neither endorsement nor representation that the item identified is the best available for the stated purpose.

show abstract

Section: Introductionmentioning

confidence: 99%

A Vacuum Infrared Standard Radiation Thermometer at the PTB

et al. 2008

Self Cite

View full text Add to dashboard Cite

show abstract

“…The VLTBB is a reference blackbody which provides temperature radiation from -170°C to 170°C and is described in detail in [5]. A schematic view of the VLTBB is given in Fig 7. It features a liquid nitrogen cooled and electrical heated outer thermostat for a rough temperature regulation.…”

Section: Vacuum Variable-low-temperature Blackbodymentioning

confidence: 99%

“…In detail we outline this procedure for a dedicated vacuum variable-low-temperature blackbody (VLTBB) [5] applied from -170°C to 170°C for remote sensing calibrations as part of the Reduced Background Calibration Facility (RBCF) of PTB [6]. The blackbody is coated with Aeroglaze Z306.…”

Section: Introductionmentioning

confidence: 99%

A Terahertz Blackbody Radiation Standard Based on Emissivity Measurements and a Monte-Carlo Simulation

Monte

Gutschwager

Adibekyan

et al. 2014

J Infrared Milli Terahz Waves

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…Details to all blackbody radiators of the RBCF are given in Table 1. The VMTBB is still under construction while the VLTBB is in operation and described in detail in [5]. By using calibrated platinum resistance thermometers placed at the bottom and along the cavity walls of the VLTBB and VMTBB, their radiation temperatures are traceable to ITS-90.…”

Section: General Layoutmentioning

confidence: 99%

“…The VLTBB is a reference blackbody that provides thermal radiation from −173 • C to 177 • C and is described in detail in [5]. A schematic view of the VLTBB is given in Fig.…”

Section: Vacuum Variable Low-temperature Blackbody (Vltbb)mentioning

confidence: 99%

Radiation Thermometry and Emissivity Measurements Under Vacuum at the PTB

et al. 2008

Self Cite

View full text Add to dashboard Cite

A new experimental facility was realized at the PTB for reducedbackground radiation thermometry under vacuum. This facility serves three purposes: (i) providing traceable calibration of space-based infrared remote-sensing experiments in terms of radiation temperature from −173 • C to 430 • C and spectral radiance; (ii) meeting the demand of industry to perform radiation thermometric measurements under vacuum conditions; and (iii) performing spectral emissivity measurements in the range from 0 • C to 430 • C without atmospheric interferences. The general concept of the reduced background calibration facility is to connect a source chamber with a detector chamber via a liquid nitrogen-cooled beamline. Translation and alignment units in the source and detector chambers enable the facility to compare and calibrate different sources and detectors under vacuum. In addition to the source chamber, a liquid nitrogen-cooled reference blackbody and an indium fixed-point blackbody radiator are connected to the cooled beamline on the radiation side. The radiation from the various sources is measured with a vacuum infrared standard radiation thermometer (VIRST) and is also imaged on a vacuum Fourier-transform infrared spectrometer (FTIR) to allow for spectrally resolved measurements of blackbodies and emissivity samples. Determination of the directional spectral emissivity will be performed in the temperature range from 0 • C to 430 • C for angles from 0 • to ±70 • with respect to normal incidence in the wavelength range from 1 µm to 1,000 µm.References to commercial products are provided for identification purposes only and constitute neither endorsement nor representation that the item identified is the best available for the stated purpose.

show abstract

Vacuum Variable-Temperature Blackbody VTBB100

Cited by 27 publications

References 4 publications

A Vacuum Infrared Standard Radiation Thermometer at the PTB

A Vacuum Infrared Standard Radiation Thermometer at the PTB

A Terahertz Blackbody Radiation Standard Based on Emissivity Measurements and a Monte-Carlo Simulation

Radiation Thermometry and Emissivity Measurements Under Vacuum at the PTB

Contact Info

Product

Resources

About