Scattering at a cylindrical potential barrier in two dimensions
A wave packet is scattered at a potential barrier. The potential inside a circle with radius 2.5 around the origin has a positive value (about half the average kinetic energy of the particle). Outside this region the potential is zero (free motion). This results in a repulsive force along the circle which causes a partial reflection when the wave packet enters the region with the potential. A second reflection occurs when the wave packet leaves the region again.
"Visual Quantum Mechanics  Book One" investigates the scattering of twodimensional wave packets in many situations including potential steps, barriers, walls, obstacles, and periodic structures. Where possible, this is done with exact solutions of the Schrödinger equation. A special MathLinkapplication "QuantumKernel" is used with Mathematica to generate the films when no exact solution of the Schrödinger equation is available.
