Above potential barrier diffusion

Bernardini, A. E.; De Leo, S.; Rotelli, P.

Above potential barrier diffusion

Authors

Bernardini, A. E.

De Leo, S.

Rotelli, P.

Description

The stationary phase method is applied to diffusion by a potential barrier for an incoming wave packet with energies greater then the barrier height. It is observed that a direct application leads to paradoxical results. The correct solution, confirmed by numerical calculations is the creation of multiple peaks as a consequence of multiple reflections. Lessons concerning the use of the stationary phase method are drawn.
8 pages, 2 figures