Untitled1_21 - Beta Beta particles are smaller and travel...

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Radiological Emergency Management Independent Study Course 1-4 GAMMA PAPER ALUMINUM LEAD ALPHA BETA Penetrating Power of Alpha, Beta, and Gamma Radiation Even the most energetic alpha particle from radioactive decay can be stopped by the outermost layer of dead skin that covers the body. Therefore, exposure to most alpha particles originating outside the body is not a serious hazard. On the other hand, if alpha emitting radioactive materials are taken inside the body, they can be the most damaging source of radiation exposure. The short range of the alpha particle causes the damaging effects of the radiation to be concentrated and in a very localized area.
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Unformatted text preview: Beta Beta particles are smaller and travel much faster than alpha particles. They are physically similar to the electrons discussed earlier in this unit, but they are not in orbit around an atom. Since beta particles travel faster and have less charge than alpha particles, they penetrate further into any material or tissue. Typical beta particles can travel several millimeters through tissue, but they generally do not penetrate far enough to reach the vital inner organs. Beta particles may be a major hazard, however, when emitted by internally deposited radioactive material or when interacting with the lens of the eye....
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This note was uploaded on 01/29/2010 for the course MPA mpa500 taught by Professor Scotts during the Spring '10 term at Acton School of Business.

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