Nuclear size - Citizendia

The size of an atomic nucleus is of the order of $10 - 15$ metres.

Nuclear radius

The nucleus has approximately a constant density and therefore the nuclear radius R can be approximated by the following formula,

$R = r 0 A 1 / 3$

where, A = Atomic mass number [ # of protons (Z) plus # of neutrons (N) ] and $r 0$ = 1. 25 fm = 1. 25 $10 - 15$ m ( $r 0$ varies by . 2 fm depending on the nuclei) . Literature: Krane, Kenneth S. , Introductory Nuclear Physics, Wiley, 1987.

© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
network: | |