@inproceedings{HartmannAnhaltHollandt, author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Hollandt, J{\"o}rg}, title = {Nearly as hot as the sun: High-temperature fixed-points for radiation thermometry and radiometry}, address = {St. Paul (USA)}, language = {en} } @inproceedings{HartmannHollandtAnhaltetal., author = {Hartmann, J{\"u}rgen and Hollandt, J{\"o}rg and Anhalt, Klaus and Sperfeld, P. and Sakharov, M. and Pikalev, Yu. and Ogarev, S. and Sapritsky, V.}, title = {Thermodynamic measurements for the melting curves of Re-C, TiC-C, and ZrC-C eutectics}, series = {Proceedings of Tempmeko 2004}, booktitle = {Proceedings of Tempmeko 2004}, editor = {Zvizdic, D.}, address = {Zagrep}, pages = {189 -- 194}, language = {en} } @inproceedings{HartmannAnhaltHollandtetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Hollandt, J{\"o}rg and Machin, Graham and Lowe, D. and McEvoy, H. and Sakuma, F. and Ma, L.}, title = {Comparison of the high-temperature scales of the NMIJ and the NPL with the scale of the PTB in the temperature range from 1000 °C up to 2900 °C for measurements within the EU project HIMERT}, series = {Proceedings of Tempmeko 2004}, booktitle = {Proceedings of Tempmeko 2004}, editor = {Zvizdic, D.}, address = {Zagrep}, pages = {1063 -- 1068}, language = {en} } @inproceedings{HartmannTaubertFriedrichetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Friedrich, R. and Sperfeld, P. and Hollandt, J{\"o}rg}, title = {Long-Term Stability of the Spectral Responsivity of Filter Radiometers at the PTB}, series = {Proceedings of Tempmeko 2004}, booktitle = {Proceedings of Tempmeko 2004}, editor = {Zvizdic, D.}, address = {Zagrep}, pages = {977 -- 982}, language = {en} } @inproceedings{HartmannIshiiFukuzakietal., author = {Hartmann, J{\"u}rgen and Ishii, J. and Fukuzaki, T. and McEvoy, H.C. and Simpson, R. and Machin, Graham and Gutschwager, B. and Hollandt, J{\"o}rg}, title = {A comparison of the blackbody cavities for infrared ear thermometers of NMIJ, NPL, and PTB}, series = {Proceedings of Tempmeko 2004}, booktitle = {Proceedings of Tempmeko 2004}, editor = {Zvizdic, D.}, address = {Zagrep}, pages = {1093 -- 1098}, language = {en} } @inproceedings{HartmannAnhaltGutschwageretal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Gutschwager, B. and Monte, C. and Sperfeld, P. and Taubert, Dieter Richard and Hollandt, J{\"o}rg}, title = {The PriTeRa facility of PTB for spectral radiance and irradiance calibrations and radiation thermometry in the range from -170 °C up to 3200 °C and from 200 nm up to 50 µm}, series = {Proceedings of NEWRAD}, booktitle = {Proceedings of NEWRAD}, pages = {231 -- 232}, language = {en} } @inproceedings{HartmannTaubertAnhaltetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Anhalt, Klaus and Gutschwager, B. and Monte, C. and Hollandt, J{\"o}rg}, title = {Radiation thermometry, thermodynamic temperature and emissivity measurements at the PTB}, publisher = {Encuentro Nacional de Metrolog{\´i}a El{\´e}ctrica 2009}, address = {Queretaro (Mexico)}, abstract = {To meet the increasing demand of calibrations in the field of radiation thermometry, the Physikalisch-Technische Bundesanstalt (PTB) operates two different setups for calibrations covering the temperature range from-60 C up to 3000 C. The first setup consists of several heat-pipe blackbodies in conjunction with platinum resistance thermometers, calibrated according to the International Temperature Scale of 1990 (ITS-90) and is applied for calibrations in the temperature range from-60 C to 961.78 C. In the temperature range from 962 C to 3000 C the calibration is based on high temperature blackbodies. The temperature of these blackbodies is determined in two independent ways: traceable to the ITS-90 gold fixed point or via absolutely calibrated filter radiometers (FR) traceable to the detector primary standard, the cryogenic radiometer. Taking advantage from the high accuracy of the FR calibration, these FRs have also been successfully used for the investigation of the thermodynamic accuracy of the ITS-90 in the range from 419 C to 962 C. For non-contact temperature measurements, the emissivity of the observed object is one of the most important parameters. Therefore, PTB has set up instrumentations for measuring the directional spectral and total emissivity of samples in air from 80 C up to 400 C over a spectral range from 4 µm to 40 µm and under vacuum from 0 C to 600 C and in the spectral range from 1 µm to 1000 µm.}, language = {en} } @inproceedings{HartmannTaubertMonteetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Monte, C. and Gutschwager, B. and Hollandt, J{\"o}rg}, title = {Traceable calibration of radiation sources from the visible to the far infrared for space borne applications at PTB}, series = {Proceedings of SPIE Volume 7474, Sensors, Systems, and Next-Generation Satellites XIII}, booktitle = {Proceedings of SPIE Volume 7474, Sensors, Systems, and Next-Generation Satellites XIII}, abstract = {The Physikalisch-Technische Bundesanstalt (PTB) has developed dedicated instrumentations and methods for the traceable calibration of space borne instruments in terms of the three fundamental radiometric units, i.e. spectral radiance (radiation temperature), spectral radiant intensity and spectral photon flux. The traceable calibration under conditions similar to the space environment is achieved by use of two major radiometric calibration facilities of PTB, the Spectral Radiance Comparator Facility (SRCF) and the Reduced Background Calibration Facility (RBCF) which are part of the Primary Temperature Radiator Facility of PTB and cover the wavelength range from the UV to the FIR (THz range). The improved detector instrumentations of the SRCF and RBCF, detailed calibration schemes and results of calibrations for space missions are presented.}, language = {en} } @inproceedings{HartmannMcEvoyMachinetal., author = {Hartmann, J{\"u}rgen and McEvoy, H.C. and Machin, Graham and Friedrich, R. and Hollandt, J{\"o}rg}, title = {Comparison of the New NPL Primary Standard Ag Fixed-Point Blackbody Source with the Primary Standard Fixed Point of PTB}, series = {AIP Conference Proceedings (684)}, booktitle = {AIP Conference Proceedings (684)}, publisher = {American Institute of Physics}, isbn = {0-7354-0153-5}, pages = {909 -- 914}, abstract = {Above the freezing point of silver (961.78 °C), the International Temperature Scale of 1990 is defined in terms of Planck's radiation law. The scale is maintained and disseminated using a validated and linear pyrometer in conjunction with a blackbody reference source at either the Ag, Au (1064.18 °C) or Cu (1084.62 °C) freezing point. In order to realize the scale with the highest precision high quality, well-characterised, reproducible fixed-point blackbody sources are required. Such sources have been maintained at NPL for a number of years, but it was felt that improvements to the design would be beneficial. A new Ag point blackbody source has therefore been constructed. The new design will improve the quality and reproducibility of the melting and freezing plateaux and reduce errors due to the 'out-of-focus' size-of-source effect which is difficult to measure and to eliminate. Full details of the design of the new …}, language = {en} } @article{HartmannAnhaltHollandtetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Hollandt, J{\"o}rg and Schreiber, Ekkehard and Yamada, Y.}, title = {Improved thermal stability of the linear pyrometer LP3 for high temperature measurements within the EU-project Himert}, series = {VDI Bericht 1784}, journal = {VDI Bericht 1784}, pages = {135 -- 141}, language = {en} } @inproceedings{HartmannKrenekAnhaltetal., author = {Hartmann, J{\"u}rgen and Krenek, S. and Anhalt, Klaus and Lindemann, A. and Hollandt, J{\"o}rg}, title = {Dynamic Emissivity Measurement: First Results}, address = {Graz}, language = {en} } @inproceedings{HartmannAnhaltHollandtetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Hollandt, J{\"o}rg and Schreiber, Ekkehard and Yamada, Y.}, title = {Improved thermal stability of the linear pyrometer LP3 for high temperature measurements within the EU-Project HIMERT}, address = {Berlin}, language = {en} } @inproceedings{HartmannGutschwagerHollandt, author = {Hartmann, J{\"u}rgen and Gutschwager, B. and Hollandt, J{\"o}rg}, title = {PTB Activities in the Field of Testing and Calibration of Clinical IR Ear Thermometers}, address = {N{\"u}rnberg}, language = {en} } @inproceedings{HartmannTaubertHollandtetal., author = {Hartmann, J{\"u}rgen and Taubert, D. and Hollandt, J{\"o}rg and Fischer, J.}, title = {Investigation of the accuracy of the ITS-90 with reference to thermodynamic temperature in the range from 400 °C to 600 °C}, address = {Chicago (USA)}, language = {en} } @inproceedings{HartmannMcEvoyMachinetal., author = {Hartmann, J{\"u}rgen and McEvoy, H.C. and Machin, Graham and Friedrich, R. and Hollandt, J{\"o}rg}, title = {Comparison of the new NPL primary standard Ag fixed-point blackbody source with the primary standard fixed-point of PTB}, address = {Chicago (USA)}, language = {en} } @misc{HartmannTaubertFriedrichetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Friedrich, R. and Hollandt, J{\"o}rg}, title = {Improved calibration of the spectral responsivity of interference filter radiometers in the visible and near infrared spectral range at PTB}, address = {Gaithersburg (USA)}, language = {en} } @inproceedings{HartmannAnhaltTaubertetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Taubert, Dieter Richard and Hollandt, J{\"o}rg}, title = {Absolute radiometry for the MeP-K}, series = {Tempmeko 2010}, booktitle = {Tempmeko 2010}, address = {Portoroz (Slowenien)}, language = {en} } @inproceedings{HartmannKrenekAnhaltetal., author = {Hartmann, J{\"u}rgen and Krenek, S. and Anhalt, Klaus and Lindemann, A. and Hollandt, J{\"o}rg}, title = {A dynamic method to measure emissivity at high-temperatures}, address = {Portoroz (Slowenien)}, language = {en} } @inproceedings{HartmannTaubertMonteetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Monte, C. and Baltruschat, C. and Gutschwager, B. and Hollandt, J{\"o}rg and Kochems, D. and K{\"u}chel, C. and te Plate, M.}, title = {Radiometric calibration of the NIRSpec instrument on the James Webb Space Telescope in the wavelength range from 0.7 µm to 5.0 µm}, address = {N{\"u}rnberg}, language = {en} } @inproceedings{HartmannTaubertMonteetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Monte, C. and Gutschwager, B. and Baltruschat, C. and Hollandt, J{\"o}rg and Kochems, D. and K{\"u}chel, C.}, title = {The Spectral Photon Flux of the Radiometric Calibration Spectral Source for the NIRSpec Instrument of the James Webb Space Telescope}, series = {Proceedings of NEWRAD}, booktitle = {Proceedings of NEWRAD}, pages = {79 -- 80}, language = {en} }