# Question: 3 nuclei have a radius of about r12 fma13 ...

###### Question details

3. Nuclei have a radius of about R=(1.2 fm)(A^1/3 ), where A is the total number of nucleons (protons and neutrons). For 241Am decaying to α + 237Np we’ll say the α particle is bouncing around in a box the size of the Am nucleus. Use 2R size. a) What is the minimum velocity we can say the alpha particle has? (find it from Δp) b) Find the α mass at http://physics.nist.gov/cgi-bin/cuu/Value?malc2mev c) and determine the kinetic energy for that velocity.