# Meaning of wave function which is in inside of the potential wall? [duplicate]

In particle in square potential barrier problem, we can easily find that some probabilities exist which express how many particles can go beyond of the potential wall.

So my question is that, can we find some particles in the potential wall - square of wave function's norm really means probability of find a particle in the wall?

In particle in square potential barrier problem, we can easily find that some probabilities exist which express how many particles can go beyond of the potential wall.

As there may be a language problem here, there are two interpretations of your question.

1) the barrier problem which allows for tunneling

2) The square well potential which will give energy levels for occupation

So my question is that, can we find some particles in the potential wall - square of wave function's norm really means probability of find a particle in the wall?