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/form/page-feedback
X-Ray Spectroscopy and Calibrations in the 50 eV to 60 keV, ed. by B. Barber, H. Roehrig, P. Doty, L. Porter, and E. Morton: Page feedback