secular equilibrium meaning in Hindi

Examples

1. An alternative is to store specimens in gas tight transparent containers in which radon will accumulate and decay to secular equilibrium.
2. The 44 Ti / 44 Sc generator represents a secular equilibrium system with a half-life ratio between parent and daughter of ca . 130 000.
3. The quantity of radionuclide B when secular equilibrium is reached is determined by the quantity of its parent A and the half-lives of the two radionuclide.
4. In contrast, uranium is soluble to some extent in all uranium-lead system ), thorium-230 instead approaches secular equilibrium with its radioactive parent uranium-234.
5. Instead, the uranium-thorium technique calculates an age from the degree to which secular equilibrium has been restored between the radioactive isotope thorium-230 and its radioactive parent uranium-234 within a sample.
6. At secular equilibrium, the number of thorium-230 decays per year within a sample is equal to the number of thorium-230 produced, which also equals the number of uranium-234 decays per year in the same sample.
7. During reactor operation at a given power level, a secular equilibrium is established within 40 50 hours, when the production rate of iodine-135, its decay to xenon-135, and its burning to xenon-136 and decay to caesium-135 are keeping the xenon-135 amount in the reactor constant at a given power level.
8. This strategy may not apply when the parent-daughter pair achieve secular equilibrium very rapidly or when the half-life of the daughter nuclide is significantly shorter than the time that has elapsed since purification of the nuclear material, e . g . 237 Np / 233 Pa . Another possible complication is if in environmental samples, non-equivalent metal / ion transport for parents and daughter species may complicate or invalidate the use of chronometric measurements.