Page 183 - Radiation Safety
P. 183
Charge and mass of
particles
Particles Symbol Charge Mass (amu)
Electron e-, β- -1 0.000548
+
Positron e ,β + +1 0.000548
1 +
Proton P, H +1 1.00727
1
1
Neutron N, n 0 1.00866
0
amu is atomic mass unit, 1 amu =1.6604 x 10 -24 kg
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