Hi, i am beginning elementary Quantum Mechanics as my course. While studying one question arise in my mind :(adsbygoogle = window.adsbygoogle || []).push({});

In the solution of Schrodinger wave equation there are two parts.

ψ=A*exp(jKx) + B*exp(-jkx). (for confined electron)

But when dealing with free electron the solution is of the following pattern :

ψ = A*exp(jkx) or ψ = B*exp(-jkx).

Can any one tell me the reason behind that?

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# Solution of Schrodinger equation for free electron

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