1. In Current Science, a measure of the size of an atomic nucleus. Modern direct measurements are based on the scattering of electrons by nuclei.
2. In Neu Theory, a measure of the size of atomic nuclei and the charge shield. The proton’s mass and charge radius is the physical standard for atomic volume and absolute density. The charge radii values used by Neu Theory in the Neu Mass & Charge Radii Table, are obtained from data published in September 1999 by the International Nuclear Data Committee of the International Atomic Energy Agency.
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