NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Eric L. Shirley (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 51 - 75 of 192

Many-Pole Model of Inelastic Losses Applied to Calculations of XANES

December 16, 2009
Author(s)
Eric L. Shirley, Joshua J. Kas, J. T. Vinson, N. Trcera, D. Cabaret, John J. Rehr
Conventional Kohn-Sham band-structure methods for calculating deep-core x-ray spectra typically neglect photo-electron self-energy effects, which give rise to an energy dependent shift and broadening of the spectra. Here an a posteriori procedure is

Sources of Differences in On-Orbit Total Solar Irradiance Measurements

July 13, 2009
Author(s)
James J. Butler, R Barnes, B. Carol Johnson, Joseph P. Rice, Eric L. Shirley
There is a 5 W/m2 difference between current on-orbit Total Solar Irradiance (TSI) measurements. On 18-20 July 2005, a workshop was held at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland that focused on understanding

The-Final-State Symmetry of Na 1s Core-shell Excitons in NaCl and NaF

July 8, 2009
Author(s)
Eric L. Shirley, K. P. Nagle, G T. Seidler, T. T. Fister, J. A. Bradley, F. C. Brown
We report measurements of the Na 1s contribution to the nonresonant inelastic x-ray scattering (NRIXS) from NaCl and NaF. Prior x-ray absorption studies have observed two pre-edge excitons in both materials. The momentum transfer-dependence (q-dependence)

Modeling Core-Hole Screening in Core-Excitation Spectroscopies

October 16, 2008
Author(s)
Eric L. Shirley, J A. Soininen, J J. Rehr
We consider screening of the core-hole potential experienced by the ejected electron in core-excitation processes. This potential affects near-edge structure strongly, but it appears difficult to consistently obtain reliable screened core-hole potentials

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
Was this page helpful?