IEVref:395-07-07ID:
Language:enStatus: Standard
Term: reactivity
Synonym1:
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Synonym3:
Symbol: ρ
Definition: quantity such as:

ρ = 1 – (1/ keff)

where

keff is the effective multiplication factor

Note 1 to entry: The parameter ρ gives the deviation from criticality of a nuclear chain reacting medium which is such that positive values correspond to a supercritical state and negative values to a subcritical state.

Note 2 to entry: This entry was numbered 393-15-42 in IEC 60050-393:2003.


Publication date:2014-03
SourceISO 921:1997, definition 1006, modified
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