- #1
raul_l
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Homework Statement
I have been given the following assignment:
"The meson moves within the nucleus under the influence of a screened Coulomb potential known as the Yukawa potential. Given that the mass of a meson is about 270 times the mass ot the electron and that the effective extent of the potential is of the order of the size of a nucleus, calculate the energy levels of mesons within a nucleus consisting of 10 protons and 10 neutrons."
Homework Equations
[tex] V(r)=- \frac{Ze^2}{4\pi \epsilon_{0} r} e ^{-\frac{r}{a}} [/tex]
The Attempt at a Solution
I have a very simple question. What exactly is r? The distance from the center of the nucleus? What happens if we get closer and closer to the center of the nucleus? Does the potential reach infinity or does it drop to zero (kinda like gravity which usually increases with 1/r but drops to zero a the center of Earth because of the Gauss law)?
I need to understand these basics things before I can move on.
I've tried searching the web but couldn't find anything useful.
I'd really appreciate it if anyone could shed some light on this.