Neutron cross section according to its neutron cross section and how it reacts to an incident neutron. Nuclides that tend to absorb a neutron and either decay or keep the neutron in its nucleus are neutron absorbers and will have a "capture cross section" for that reaction. Isotopes that fission, are fissionable fuels and have a corresponding "fission cross section". The remaining isotopes will simply scatter the neutron, and have a "scatter cross section". Some isotopes, like uranium-238, have nonzero cross sections of all three. Isotopes which have a large scatter cross section and a low mass are good neutron moderators (see chart
Papal Lateran Cross (The sacred and holy church of the Lateran - the mother and the head of all of the churches of the city and the world). The medal has been crafted in a number of designs: with or without an adjoining circle, as well as a solid medal with a cross in relief. The accompanying ribbon is red with blue stripes along the sides. Notable individuals who received this honor include: Papal Lateran Cross The Papal Lateran Cross () is a medal for recognition of merit bestowed by the Holy See. The Lateran Cross was commissioned by Pope Leo XIII, and