An official website of the United States government
Here’s how you know
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.
https://www.nist.gov/people/david-r-black
David R Black (Fed)
Research Interests
The development, manufacture and certification of Standard Reference Materials for the x-ray diffraction community.
Figure 1: The divergent beam x-ray powder diffractometer used to certify Standard Reference Materials.
James Cline, Marcus Mendenhall, David R. Black, Albert Henins, Jack Prothero
NIST certifies a suite of Standard Reference Materials (SRMs) to be used to evaluate specific aspects of the instrument performance and measurements via the
M Erdtmann, M T. Currie, Joseph Woicik, David R. Black
State-of-the-art applications involving relaxed SiGe virtual substrates have a low tolerance for defectivity, i.e., threading dislocation density (TDD) and
Marcus Mendenhall, David R. Black, Donald Windover, James Cline
The difference in the diffracted intensity of the sigma-and pi-polarized components of an X-ray beam in powder diffraction has generally been treated according
The data from this instrument consists of sets of measurements of Xray intensity as a function of diffraction angle. Almost all of it is collected using scintillator point detector with a graphite