Rutherford Scattering: Using Beam Current & Intensity

oksanav
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How do you use a beam current in rutherford scattering? Is it related to the intensity? All the book's questions and reading talks about is intensity, briefly, but the teacher's giving beam current.
Thanks!
 
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Nevermind, what I was doing was correct.
 
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This figure is from "Introduction to Quantum Mechanics" by Griffiths (3rd edition). It is available to download. It is from page 142. I am hoping the usual people on this site will give me a hand understanding what is going on in the figure. After the equation (4.50) it says "It is customary to introduce the principal quantum number, ##n##, which simply orders the allowed energies, starting with 1 for the ground state. (see the figure)" I still don't understand the figure :( Here is...
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Thread 'Understanding how to "tack on" the time wiggle factor'

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