EXAMPLES OF PARTICULATE RADIATION

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Type of Radiation Greek Symbol Description Charge Mass at Rest
Alpha Combination of 2 protons and 2 neutrons +2 4.001 amu
(6.64 x 10-24 g)
Beta (-) Electron -1 0.000549 amu
(9.11 x 10 28 g)
Positron, or Beta (+) Positron (antimatter electron) +1 0.000549 amu
(9.11 x 10-28 g)

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