- #1

ChrisWM

- 13

- 1

- Homework Statement
- What kinetic energy does an a-particle have to have in order to just come into contact with the surface of an iron nucleus in a head on collision in a scattering experiment? (You may assume the iron is fixed and remains at rest during the interaction.) For the radius of the a-particle use ra = 2.60 fm and for the iron nucleus use rFe = 4.59 fm.

- Relevant Equations
- k=(z1e)(z2e)/(4pi*(eo)(rmin))

I have the equation but I am unsure of what my r min would be. Is it the sum of the radii or the difference? I am also confused on what z1 would be. I am fairly sure z2 is the atomic number of Fe(26) but I am unsure of this as well.

Edit: I just read that z1 could be 2, is this correct?

Edit: I just read that z1 could be 2, is this correct?