Pb 210 dating wiki updating peerguardian

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The atomic number of the resulting daughter nucleus is 1 less than the radioactive parent nucleus, but the mass number remains same.The isotope fluorine-18, which can be used in medical diagnostic bone scans in the form Na18F is an example of positron emitter: Electron Capture Another way for an unstable nucleus to increase the number of neutrons is to capture an electron from the closest electron shell (the n-1 or K-shell) and use it in the conversion of a proton into a neutron.Material giving rise to these enhanced exposures has become known as naturally occurring radioactive material (NORM).NORM is the acronym for Naturally Occurring Radioactive Material, which potentially includes all radioactive elements found in the environment.The nucleus that undergoes radioactive decay is known as the parent, and the resulting more stable nucleus is known as the daughter.

However, certain work activities can give rise to significantly enhanced exposures that may need to be controlled by regulation.Such radiations ionize other atoms or molecules, releasing electrons.These free electrons cause DNA damage that could eventually lead to cancer [1].The atomic number of the resulting daughter nucleus is 1 greater than the radioactive parent nucleus, but the mass number remains the same.The isotope carbon-14, whose decay is the basis of radiocarbon dating of archaeological artifacts, is an example of radioactive nucleus that undergoes beta- decay.

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