Pb 210 dating wiki

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I is not deliberately produced for any practical purposes.

However, its long half-life and its relative mobility in the environment have made it useful for a variety of dating applications.

I) is a long-lived radioisotope of iodine which occurs naturally, but also is of special interest in the monitoring and effects of man-made nuclear fission decay products, where it serves as both tracer and potential radiological contaminant.

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Uranium is about five times better as a gamma ray shield than lead, so a shield with the same effectiveness can be packed into a thinner layer.The Soviet Union's test of the "Tsar Bomba" in 1961 produced "only" 50 megatons of explosive power, over 90% of which came from fusion, because the U been used instead, the yield of the "Tsar Bomba" could have been well-above 100 megatons, and it would have produced nuclear fallout equivalent to one third of the global total that had been produced up to that time.The decay chain of U is commonly called the "radium series" (sometimes "uranium series").U or U-238) is the most common isotope of uranium found in nature, with a relative abundance of 99%.Unlike uranium-235, it is non-fissile, which means it cannot sustain a chain reaction.Doppler broadening of U-238's neutron absorption resonances, increasing absorption as fuel temperature increases, is also an essential negative feedback mechanism for reactor control.

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