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1 Know the names and descriptions of the three main types of nuclear decay (alpha, beta, gamma). 2  Know the symbols and charges for alpha and beta particles.  Know how to write basic nuclear reactions for alpha and beta decay.
External radiation, sometimes called external beam radiation, is the most common type of radiation. In this technique, a large machine called a linear accelerator aims a beam of high-energy radiation at the area affected by the cancer. This form of radiation is given on an outpatient basis 5 days a week, over 5 to 7 weeks, depending on the particular situation.