Figure 4.
XPS spectra of O 1s (a), Ca 2p (b), and P 2p (c) regions. Besides the main photoemission peaks, in all the spectra are clearly visible the shake-up satellites.
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.