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**quantum current question**

Hey,

I've been trying to work out this question and I'm really struggling to work out what to do.

http://img36.imageshack.us/img36/9759/afasp.jpg [Broken]

I know that the units of current density is flow per unit area but I can't see a way to use that to prove the wave function has units such that exactly one particle passes per second.

When I sub the wave function into j I get j=1, all the units and everything cancel out.

Does getting j=1 mean only 1 particle flows through a unit area each second?

Substituting the wave function straight in seems too simple to answer the question,

Is there something I have missed?

Thanks in advanced

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