- #1
swain1
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Homework Statement
When an electron has tunnelled through a potential barrier it's wavefunction is described by a plane wave traveling in the positive x direction. In this region the probability density is constant. I am trying to explain why it is constant but can't find any info in books or on the internet.
Homework Equations
f(x)=Fexp(ikx)
The Attempt at a Solution
Have had some ideas which haven't worked out to be right. I now it is something to do with the wavefunction being a plane wave but can't work out why it is constant.