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.
Total neutron throughput as a function of (a) condenser focal length (b) minimum condenser intersection radius for focal length 1000 mm. Uncertainties are the root mean square deviation of simulations using the same lens parameters. The minimum intersection radius for the objective had been previously determined.
