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Search Publications by: Eric L. Shirley (Fed)

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Displaying 126 - 150 of 192

Fraunhofer Diffraction Effects on Total Power for a Planckian Source

October 1, 2001
Author(s)
Eric L. Shirley
An algorithm for computing diffractions effects on total power in the case of Fraunhofer diffraction by a circular lens or aperture is derived. The result for Fraunhofer diffraction of monochromatic radiation is well known, and this reports the result for

Scheme to Calculate Core Hole-Electron Interactions in Solids

October 1, 2001
Author(s)
J A. Soininen, Eric L. Shirley
We present a first-principles scheme for calculating a core-hole potential for core electron excitations. The scheme incorporates atomic and solid-state screening in the description of core excitations in several materials.We compare the results calculated

Core-Hole-Electron Interaction in X-Ray Raman Scattering

September 1, 2001
Author(s)
J A. Soininen, K Hamalainen, W A. Caliebe, C C. Kao, Eric L. Shirley
This work applies a recently developed first-principles scheme for calculating core-excited states in solids tonon-resonant inelastic x-ray scattering. Within the computational scheme the interaction between the excited electron and the core hole is

Nonresonant Inelastic X-Ray Scattering Study of Cubic Boron Nitride

July 1, 2001
Author(s)
S Galambosi, J A. Soininen, K Hamalainen, Eric L. Shirley, C C. Kao
During the recent years boron nitride has been extensively studied via numerous experimental techniques because it exhibits several fascinating characteristics such as semiconducting properties, extreme hardness, high thermal conductivity and large band

Aspects of Practical Radiometry: Terminology, Uncertainty, and Physical Optics

January 1, 2001
Author(s)
Eric L. Shirley, Raju V. Datla
We discuss efforts that have been made to help establish-in practice-a greater uniformity of nomenclature used for various terms in radiometry as well as expression of measurement uncertainty. We also discuss the role of diffraction effects, which account

1-cm Collimated Source for Use in Infrared Calibrations

July 1, 2000
Author(s)
Beverly Klemme, Timothy M. Jung, Adriaan C. Carter, Eric L. Shirley, Steven R. Lorentz, Raju V. Datla
A 1 cm collimated source has been developed and tested for calibration of detectors in the 2 m to 8 m range. This source will be used to calibrate the Transfer Radiometer (BXR) currently under development at NIST. Also, the results of the test of this

Dynamic Structure Factor of Diamond and LiF Measured Using Inelastic X-Ray Scattering

April 1, 2000
Author(s)
W A. Caliebe, J A. Soininen, Eric L. Shirley, C C. Kao, K Hamalainen
The dynamic structure factors S(q,ω) of diamond and LiF have been measured using inelastic x-ray scattering. The experimental data are compared to results of ab initio calculations, which take into account the interaction of the excited electron with the
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