Examples of Particulate Radiation

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


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