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
Horizontal escalation only work if the Soviet Union's military reached a ceiling or peak to their Military buildup. While the Soviet Union continued to deny any limits on how large their military could grow, the United States kept building its military with Ronald Reagan's five-year plan and the U.S combined both horizontal escalation and Reagan's five-year plan in attempts to cap the Soviet Union's military growth. This would put a cap on the Soviet Union's military, once their military became spread out and an enormous amount of money was added by the Soviet Union to move and deploy more troops. Horizontal targets