- #36

nickjer

- 674

- 2

Got a bit confused now, this is what I have noted down in addition to the previous post (I think this is more correct):

[tex]\left<\psi V_{\gamma}(r)\psi\right> = \int^{\infty}_{0}\left[-\left(\frac{1}{\pi r a^{3}}\right)e^{-r\left(\frac{2}{a}-\gamma\right)}\right]dr[/tex]

so then get this:

[tex]=\left[\frac{1}{\pi a^{3}}\left(\frac{2}{a}-\gamma\right)e^{-r\left(\frac{2}{a}-\gamma\right)}\right]^{\infty}_{0}[/tex]

and after input limits:

[tex]=\frac{1}{\pi a^{3}}\left(\frac{2}{a}-\gamma\right)[/tex]

.. any good?

You are still leaving out constants, like charge. Also, you completely changed the solution. Not sure what happened but now things are worse.

Go back and carefully step through everything on paper that way you can keep track of everything.