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?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Solution of Schrodinger equation for free electron

**Physics Forums | Science Articles, Homework Help, Discussion**