Schoedinger Equation in Momentum space

[tetchou]

Please, I would like to write the time-independent schroedinger equation (describing the motion of a bound electron) in momentum space and in cylindrical coordinates.
Can you help me?
Thank you very much.
Hugues Merlain

[turin]

If I remember correctly, for a free particle it is:

(1/2m) |p|2 ψ = (ih_bar) ∂ψ/∂t