subcritical
51Matochkin Strait — A map of the Novaya Zemlya with Matochkin Strait. Matochkin Strait or Matochkin Shar (Russian: Маточкин Шар) is a 323 km2 (125 sq mi) strait between the Severny and Yuzhny Islands of Novaya Zemlya. It connects the Barents Sea and… …
52Energy amplifier — In nuclear physics, an energy amplifier is a novel type of nuclear power reactor, a subcritical reactor , in which an energetic particle beam is used to stimulate a reaction, which in turn releases enough energy to power the particle accelerator… …
53Neutron reflector — A neutron reflector is any material that reflects neutrons. This refers to elastic scattering rather than to a specular reflection. The material may be graphite, beryllium, steel, and tungsten carbide, or other materials. A neutron reflector can… …
54Criticality accident — …
55Supercritical flow — A supercritical flow is when the flow velocity is larger than the wave velocity. The analogous condition in gas dynamics is supersonic.Information travels at the wave velocity. This is the velocity at which waves travel outwards from a pebble… …
56Mannitol — D Mannitol Systematic (IUPAC) name (2 …
57Prompt neutron — In nuclear engineering, a prompt neutron is a neutron immediately emitted by a nuclear fission event, as opposed to a delayed neutron decay which can occur within the same context, emitted by one of the fission products anytime from a few… …
58Hopf bifurcation — In bifurcation theory a Hopf or Andronov Hopf bifurcation is a local bifurcation in which a fixed point ofa dynamical system loses stability as a pair of complex conjugate eigenvalues of the linearization around the fixed point crossthe imaginary …
59Nevada Desert Experience — November 1951 nuclear test at Nevada Test Site The Nevada Desert Experience is a name for the movement to stop U.S. nuclear weapons testing that came into use in the middle 1980s. It is also the name of a particular anti nuclear organization… …
60Insertion time — The term insertion time is used to describe the length of time which is required to rearrange a subcritical mass of fissile material into a critical mass. This is one of the three main requirements in a nuclear weapon design to create a working… …
