Radiocarbon dating half lives

In addition to this internal exposure, humans also receive external exposure from radioactive materials that remain outside the body and from cosmic radiation from space.

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When these detectors’ sensitive structures are based on single diodes, they are called semiconductor diode detectors.

Radon is a decay product of uranium, which is relatively common in the Earth’s crust but more concentrated in ore-bearing rocks scattered around the world.

Radon seeps out of these ores into the atmosphere or into ground water; it can also infiltrate into buildings.

This is four times more than the worldwide average artificial radiation exposure, which in the year 2008 amounted to about 0.6 m Sv per year.

In some wealthier countries, such as the US and Japan, artificial exposure is, on average, greater than the natural exposure, due to greater access to medical imaging.

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