Thermal Neutron Porosity Measurement
The thermal neutron porosity is a measurement of the slowing down and capture of neutrons between a source and one, or more, thermal neutron detectors. The neutron source emits high energy neutrons that are slowed mainly by elastic scattering to near thermal levels. Thermal neutrons have about the same energy as the surrounding matter, typically less than 0.4 eV. The slowing down process is dominated by hydrogen.
