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Nuclear weapons: Difference between revisions
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* The atom - the nucleus - periodic table - size scales (electron vs proton vs neutron vs alpha particle vs large nucleus vs atomic radius vs molecular size) | * The atom - the nucleus - periodic table - size scales (electron vs proton vs neutron vs alpha particle vs large nucleus vs atomic radius vs molecular size) | ||
* Shell models of the atom and nucleus - Coulomb potentials - Yukawa potentials - neutron absorption and scattering | * Shell models of the atom and nucleus - Coulomb potentials - Yukawa potentials - neutron absorption and scattering | ||
** Neutron effect is a function of (a) incident neutron energy (b) many-body nucleon-nucleon forces and (c) luck | |||
** Resonance with nucleus activation energies leads to preferring absorption over scattering | |||
** Nucleon-nucleon forces are typically described in per-{isotope X fine structure} terms, ignoring hyperfine details | |||
* Electodynamics - strong nuclear force - weak nuclear force - quantum tunneling | * Electodynamics - strong nuclear force - weak nuclear force - quantum tunneling | ||
** Thermal neutrons can't classically cross Coulomb repulsions, but tunneling permits π-induced fission (π = pion, aka any of 3 π-mesons) | ** Thermal neutrons can't classically cross Coulomb repulsions, but tunneling permits π-induced fission (π = pion, aka any of 3 π-mesons) |