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Search Publications by

Sergey Mekhontsev (Assoc)

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Displaying 26 - 50 of 50

Emissivity Modeling of Thermal Radiation Sources With Concentric Grooves

July 1, 2004
A Prokhorov, Sergey Mekhontsev, Leonard Hanssen
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 from the

Monte Carlo Modeling of an Integrating Sphere Reflectometer

July 1, 2003
A Prokhorov, Sergey Mekhontsev, Leonard Hanssen
The Monte Carlo method has been applied to numerical modeling of an integrating sphere designed for hemispherical-directional reflectance factor measurements. It is shown that a conventional algorithm of inverse ray tracing used for estimation of

Low Scatter Optical System for Emittance and Temperature Measurements

October 1, 2002
Sergey Mekhontsev, Leonard M. Hanssen
The development and evaluation of an optical system for a new spectral directional emittance facility at NIST is reported. The imaging quality and signal contributions due to out-of-field-of-view scattering, commonly characterizedby the size-of-source