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.
MCNP5 model of the manufactured titanium‐encapsulated 169Yb source per the detailed specifications from the source manufacturer (Source Production & Equipment Co., Inc., St. Rose, LA). As shown, an active Ytterbium core is 3.5 mm in length and 0.6 mm in diameter. For the anisotropy data, θ = 0 is corresponding to the vertical axis of the source in the negative (downward) direction in the diagram. Figure is drawn to scale.
