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Search Publications by: Eric L. Shirley (Fed)

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Displaying 101 - 125 of 373

NIST Diffraction Program for Diffraction Corrections in Radiometry

October 16, 2008
Author(s)
Eric L. Shirley, Raju V. Datla
This package contains the documentation for a program that computes diffraction corrections for simple radiometric applications. A diskette containing the program executable and files for sample calculations is also included.

Straight-edge Diffraction of Planck Radiation

October 16, 2008
Author(s)
Peter J. Mohr, Eric L. Shirley
The irradiance diffraction profile of a straight edge is given as a Taylor series in powers of the distance from the geometrical shadow boundary to any point in the profile for monochromatic radiation. The coefficients of the series, which are obtained as

Exciton Spectroscopy of Hexagonal BN Using Non-Resonant X-Ray Raman Scattering

April 8, 2008
Author(s)
Y Feng, J A. Soininen, A L. Ankudinov, J O. Cross, Gerald T. Seidler, A T. Macrander, J J. Rehr, Eric L. Shirley
We report non-resonant x-ray Raman scattering (XRS) measurements from hexagonal BN for transferred momentum from 2 Angstrom} -1 to 9 Angstrom} -1 along directions both in and out of the basal plane. A symmetry-based argument together with calculations of

Two-Phonon Infrared Spectra of Si and Ge: Calculating and Assigning Features

August 16, 2007
Author(s)
Eric L. Shirley, Hadley Lawler
Third-order density-functional perturbation theory yields the terahertz/far-infrared absorption spectra for silicon and germanium, including all two-phonon combination and difference features. Temperature-dependent spectra are compared to available

Ferroelectric Distortion in SrTiO3 Thin Films on Si(001) by X-Ray Absorption Fine Structure: Experiment and First-Principles Calculations

April 23, 2007
Author(s)
Joseph C. Woicik, Eric L. Shirley, C S. Hellberg, S Sambasivan, Daniel A. Fischer, B D. Chapman, E A. Stern, P Ryan, D L. Ederer, H Li
Ti K and Ti L2,3 edge x-ray absorption fine-structure near-edge spectra of SrTiO3 thin films grown coherently on Si(001) reveal the presence of a ferroelectric (FE) distortion at room temperature. This unique phase is a direct consequence of the

Diffraction Effects in Radiometry

January 26, 2005
Author(s)
Eric L. Shirley
This is the draft submitted to be Chapter 10 of the book, Modern Radiometric Practice, edited by Albert C. Parr, Raju U. Datla, and James W. Gardner. This chapter is intended to discussion issues of diffraction effects on radiometric measurements.

Appendix A; Example: Calibration of a Cryogenic Blackbody

January 22, 2005
Author(s)
Raju V. Datla, Eric L. Shirley, Albert C. Parr
This manuscript is intended to be an Appendix in a book on radiometry, The Practice of Optical Radiometry. The Appendix is to provide a real example of a blackbody calibration, in order to demonstrate the statistical analysis of data. The role of