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Radioisotopes as tracers in carbon dating

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By throwing out electrons you produce charged particles called ions. We are surrounded by background radiation all of the time!Let's look closely at how the half-life affects an isotope. Therefore, after one half-life, you would have 5 grams of Barium-139, and 5 grams of Lanthanum-139.After another 86 minutes, half of the 5 grams of Barium-139 would decay into Lanthanum-139; you would now have 2.5 grams of Barium-139 and 7.5 grams of Lanthanum-139.So food treated with this radiation have a longer shelf life.Surgical instruments and syringes are also treated with gamma rays, in order, to prevent infections been transferred from patient to patient.Half-lives for various radioisotopes can range from a few microseconds to billions of years.