Patent classifications
G
PHYSICS
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G21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
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G21C
NUCLEAR REACTORS
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G21C7/06
by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
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G21C7/08
by displacement of solid control elements, e.g. control rods
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G21C7/12
Means for moving control elements to desired position
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