Neutron Research

High energy neutron research requires shielding, although the strategy to stop neutrons is different than stopping X-rays alone. Neutron absorption typically starts with a screen of material with light atoms, such as water, concrete or borated polyethylene. The closer the weight of the screen material to a neutron, the easier it is for the neutron to give up kinetic energy.  

After Neutrons are slowed down, they are captured by materials with high neutron capture cross sections, such as Cadmium. One danger of neutron absorption is that it is a type of nuclear reaction and can cause secondary radiation emitted in the form of X-rays. It is important to use X-ray shielding techniques to block any secondary emission.

ADC has experience designing and fabricating neutron research vessels requiring shielding. In 2015, ADC completed an 81.5’ long, 8’ diameter vacuum vessel for Very Small Angle Neutron Scattering (VSANS) detection experiments, hosted at NIST