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Nuclear weapons: Difference between revisions
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==Fission Weapons== | ==Fission Weapons== | ||
* Criticality - subcritical - supercritical - prompt criticality - critical insertion time - insertion (gun-type) method - spontaneous fission | * Criticality - subcritical - supercritical - prompt criticality - critical insertion time - insertion (gun-type) method - spontaneous fission | ||
* Implosion method - levitated pits - multi-point implosion | |||
* Th232 - U233 - U235 - U238 - Pu249 - Pu240 - minor actinides - transuranics - fissile, fissionable, fertile | * Th232 - U233 - U235 - U238 - Pu249 - Pu240 - minor actinides - transuranics - fissile, fissionable, fertile | ||
* Enrichment levels - enrichment methods - degradation - downblending | * Enrichment levels - enrichment methods - degradation - downblending | ||
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** Robustness of methodologies/materials/geometries (eg easiest to make a big, wasteful, HEU gun bomb) | ** Robustness of methodologies/materials/geometries (eg easiest to make a big, wasteful, HEU gun bomb) | ||
** Safety/reliability of materials/assemblies (Decay of Pu, tritium, polonium, neutron moderation by seawater, fire hazards) | ** Safety/reliability of materials/assemblies (Decay of Pu, tritium, polonium, neutron moderation by seawater, fire hazards) | ||
* | * Prompt neutrons - delayed neutrons - fast neutrons - slow neutrons - neutron reflectors | ||
* Neutron sources / initator design - Monroe Effect - Beryllium/Polonium urchin - pulsed neutron tubes - shock initators - UD3 | |||
* High explosives, Taylor-Rayleigh instabilities - assembly geometry - neutron multiplications | * High explosives, Taylor-Rayleigh instabilities - assembly geometry - neutron multiplications | ||
* Hydrides (see the <b>Ruth</b> section from [http://nuclearweaponarchive.org/Usa/Tests/Upshotk.html Upshot-Knothole]) | * Hydrides (see the <b>Ruth</b> section from [http://nuclearweaponarchive.org/Usa/Tests/Upshotk.html Upshot-Knothole]) | ||
