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Author: leonard hanssen

Displaying records 21 to 30 of 162 records.
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21. Evaluation of Blackbody Cavity Emissivity in the Infrared Using Total Integrated Scatter Measurements
Published: 2/1/2008
Authors: Leonard M Hanssen, Sergey Mekhontsev, Jinan Zeng, A Prokhorov
Abstract: Deviations from ideal blackbody (BB) behavior can be characterized by a BB s effective emissivity. The cavity emissivity is most often obtained through a model, given a particular set of input parameters associated with the BB cavity geometry and sur ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841107

22. Radiation Properties of IR Calibrators With V-Grooved Surfaces
Published: 4/1/2006
Authors: Leonard M Hanssen, A Prokhorov, Sergey Mekhontsev
Abstract: Use of linear or concentric grooves is a well-known approach for increasing the surface emissivity to enable the construction of compact blackbody radiators, improve absorptance of stray radiation traps, baffles and thermal radiation detectors, as we ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841015

23. Design and characterization of Si and InGaAs pyrometers for radiance temperature scale realization between 232 {?}C and 962 {?}C
Published: 1/1/2006
Authors: Mart Noorma, Sergey Mekhontsev, K Khromchenko, Alex Gura, Maritoni Abatayo Litorja, Benjamin K Tsai, Leonard M Hanssen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104059

24. Development and calibration of pyroelectric radiometer standards at NIST
Published: 1/1/2006
Authors: George P Eppeldauer, Zeng j, Leonard M Hanssen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104437

25. Development and calibration of pyroelectric radiometer standards at NIST
Published: 1/1/2006
Authors: George P Eppeldauer, Jinan Zeng, Leonard M Hanssen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104435

26. Radiation properties of IR calibrators with V-grooved surfaces
Published: 1/1/2006
Authors: Alexander Prokhorov, Leonard M Hanssen, Sergey Mekhontsev
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104122

27. Water heat pipe blackbody as a reference spectral radiance source between 50 {?}C and 250 {?}C
Published: 1/1/2006
Authors: Mart Noorma, Sergey Mekhontsev, V B Khromchenko, Maritoni Abatayo Litorja, Claus Cagran, Jinan Zeng, Leonard M Hanssen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104060

28. SRM 2036 Near Infrared Reflection Wavelength Standard
Published: 11/1/2005
Authors: David Lee Duewer, Steven J Choquette, Leonard M Hanssen, E A. Early
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904463

29. Infrared Emittance Measurements at NIST
Published: 10/5/2005
Authors: Leonard M Hanssen, Benjamin K Tsai, Sergey Mekhontsev
Abstract: A new capability for the measurement of the temperature-dependent emittance of specular samples in the near infrared spectral region has been developed in NIST s Infrared Spectrophotometry Laboratory to provide emittance measurements and standards fo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840983

30. Comparison of direct and indirect methods of spectral infrared emittance measurement, ed. by D. Zvizdic
Published: 1/1/2005
Authors: Leonard M Hanssen, Alexander Prokhorov, V B Khromchenko, Sergey Mekhontsev
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104514



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