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.
Photon yield for 10–30 MV x rays on the beam axis and for 15 MV x rays out to the right angle from the beam axis. The published experimental benchmark is shown with error bars for Be (plus signs), Al (crosses), and Pb (circles), compared to results of Monte Carlo simulation with GEANT4 for Be (dotted line), Al (solid line), and Pb (dashed line).
