A neutron star is one of the possible end states of a massive star. It is compressed by gravity and stabilized by the nuclear degeneracy pressure. Despite its name, the composition of these objects are not exactly known. However, from the inferred densities, neutrons will most likely compose a significant fraction of the star’s interior. While all neutron stars are expected to have a...
Within all nuclear installations concrete is a key material both for structural integrity and for the shielding of radiation. Concrete is typically a mixture of cement, sand, large aggregate and water, although various additives may also be introduced. Developing methods to independently verify the composition of shielding materials, such as concrete, is of high priority for the regulation of...