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Critical mass

In nuclear engineering, critical mass is the minimum mass of the fissile material needed for a sustained nuclear chain reaction in a particular setup. The critical mass of a fissionable material depends upon its nuclear properties (specifically, its nuclear fission cross-section), density, shape, enrichment, purity, temperature, and surroundings. It is…

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Overview

Criticality

Factors

Values

Nuclear weapon design

Advanced semantic analysis

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Map overview Semantic statistics

Critical mass

Nodes53
Edges52
Triples60
Avg. degree1.96
Density0.037736
Components1

How this topic connects Entity context

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Critical mass

Top relations

related to Temperature · 9
Critical mass → As, Doppler, Fission, Hot, If, LWR, Neglecting, Thermal, This
related to Presence of a neutron reflector · 7
Critical mass → As, By, Common, Graphite, Heavy, Surrounding, When
related to Density · 6
Critical mass → An, Assuming, Changing, Such, The, Using
related to Escape probability · 5
Critical mass → Active, As, During, The, This
related to Presence of a tamper · 5
Critical mass → Also, Because, But, In, This
related to Bare sphere · 4
Critical mass → Bare-sphere, In, Most, The
related to Dynamic chiral symmetry breaking · 4
Critical mass → As, Dynamic, Its, When
related to Sphere with tamper · 4
Critical mass → In, Little Boy, The, Tungsten
is a · 3
Critical mass → mass of fissile material that self-sustains a fission chain reaction, minimum mass of the fissile material needed for a sustained nuclear chain reaction in a particular setup, sphere
related to Elastic scattering · 3
Critical mass → Elastic, In, The

Important terminology Word statistics

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Important terminology

mass critical neutron nuclear fission material density reaction neutrons temperature criticality sphere fissile chain weapon fuel less scattering subcritical particles

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Critical massis aminimum mass of the fissile material needed for a sustained nuclear chain reaction in a particular setup0.90text
Critical massis amass of fissile material that self-sustains a fission chain reaction0.90text
Critical massis asphere0.90text
fuelinstance ofFactorsThe mass where criticality occurs may be changed by modifying certain attributes0.80text
shapeinstance ofFactorsThe mass where criticality occurs may be changed by modifying certain attributes0.80text
temperatureinstance ofFactorsThe mass where criticality occurs may be changed by modifying certain attributes0.80text
densityinstance ofFactorsThe mass where criticality occurs may be changed by modifying certain attributes0.80text
the installation of a neutron-reflective substanceinstance ofFactorsThe mass where criticality occurs may be changed by modifying certain attributes0.80text
tungsten carbideinstance ofHeavy metals0.80text
stainless steel are common as they reduce the amount of neutrons that escape during the reaction by a considerable amountinstance ofHeavy metals0.80text
Critical massrelated to Bare sphereThe0.60section
Critical massrelated to Bare sphereBare-sphere0.60section

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