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Author: leonard hanssen

Displaying records 21 to 30 of 150 records.
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21. Standard Reference Material 2036 Near-Infrared Reflection Wavelength Standard
Published: 1/1/2005
Authors: S J Choquette, Leonard M Hanssen, E A. Early
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103694

22. Emissivity Modeling of Thermal Radiation Sources With Concentric Grooves
Published: 7/1/2004
Authors: A Prokhorov, Sergey Mekhontsev, Leonard M Hanssen
Abstract: Monte Carlo based specialized software has been applied to the statistical modeling of effective emissivity of radiators with concentric grooves of trapezoidal and triangular profile. A specular-diffuse model is used in which the thermal emission fr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841655

23. Spatial and Angular Responsivity Measurements of Photoconductive HgCdTe LWIR Radiometers
Published: 6/1/2004
Authors: H Gong, Leonard M Hanssen, George P Eppeldauer
Abstract: Several newly developed large area photoconductive (PC) mercury cadmium telluride (HgCdTe) radiometers have been tested for spatial and angular responsivity for the purpose of determining what mode of operation (or radiometr-ic quantity) could provid ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841662

24. Infrared Spectral Emissivity Characterization Facility at NIST
Published: 4/1/2004
Authors: Leonard M Hanssen, Sergey Mekhontsev, V B Khromchenko
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841793

25. Effective Emissivity of a Cylindrical Cavity with an Inclined Bottom: I. Isothermal Cavity
Published: 1/1/2004
Authors: Leonard M Hanssen, Alexander Prokhorov
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103839

26. Infrared Spectral Emissivity Characterization Facility at NIST
Published: 1/1/2004
Authors: Leonard M Hanssen, V B Khromchekno, Sergey Mekhontsev
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103840

27. Spatial and Angular Responsivity Measurements of Photoconductive HgCdTe LWIR Radiometers
Published: 1/1/2004
Authors: H Gong, Leonard M Hanssen, George P Eppeldauer
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103824

28. Analytical Evaluation and Correction of Port Loss Error in Integrating Sphere Reflectometers
Published: 11/1/2003
Authors: A Prokhorov, Sergey Mekhontsev, Leonard M Hanssen
Abstract: Incomplete hemispherical irradiation of the sample (or collection of radiation, in the reverse geometry) in an integrating sphere reflectometer is unavoidable due to sample viewing (or illumination) requirements. This means that one measures with ne ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841779

29. Specular Baffle for Improved Infrared Integrating Sphere Performance.
Published: 11/1/2003
Authors: Leonard M Hanssen, A Prokhorov, V B Khromchenko
Abstract: Baffles are often placed in integrating spheres to accommodate the non-ideal aspects of other sphere components. These include detectors, sources, sphere wall surface shape and coatings. Baffles intentionally prevent light interchange between these a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841766

30. Calibration of a Spectral Responsivity Transfer Standard
Published: 9/1/2003
Authors: George P Eppeldauer, Leonard M Hanssen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104442



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