ANSR NIF Calculations Design Calculations for a NIF Diagnostic ICF targets are complex and it is important to measure target performance in several ways. For a given fuel mass, higher compression leads to higher r R and a higher scattering fraction for the fusion neutrons. A detector in the NIF chamber then measures the arrival time of neutrons.
Scattered neutrons are traveling slower, so they arrive later.
A technical report on this project is available for download .