secular equilibrium


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secular equilibrium

[′sek·yə·lər ‚ē·kwə′lib·rē·əm]
(nucleonics)
Radioactive equilibrium in which the parent has such a small decay constant that there has been no appreciable change in the quantity of parent present by the time the decay products have reached radioactive equilibrium.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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1), the expression 'long-period equilibrium' refers to a secular equilibrium. What is more, this notion is clearly distinguished from the 'static' long-period equilibrium in the sense used by traditional neoclassical authors as a situation where the quantity of capital is given while its 'form' changes so that a uniform return on the capital goods' supply prices is obtained.
ANSTO established that the uranium was in secular equilibrium and therefore not adversely affecting gamma readings, and that thorium concentrations were probably not a major contributing factor to gamma readings.
Results showed the uranium to be in secular equilibrium. However, RUN has yet to determine suitable statistical factors to apply to downhole logging results to ensure the eU3O8 data is accurate.