# Electron In An Infinite Potential Well

1. Nov 22, 2008

### sattomon

1. The problem statement, all variables and given/known data

An electron is in a Infinite potential well (1-dimensional box with infinite wall boundary conditions) at the second energy level. The width of the box is L. What is the electron density n(x) as a function of the position x?

2. Relevant equations
time-independent Schrödinger equation:

general solution:

3. The attempt at a solution

From http://en.wikipedia.org/wiki/Particle_in_a_box#1-dimensional_box

I'm not sure what the next step is. I'm confused with the wording "electron density n(x)". Does this mean probability (i.e. $\|\psi_n(x)\|^2$)?

2. Nov 22, 2008

### Dick

Yes, it does.

3. Nov 23, 2008

### sattomon

So does that mean$n(x)=\|\psi_n(x)\|^2$ ?

4. Nov 23, 2008

### Dick

Yes,
$n(x)=\|\psi_n(x)\|^2$