next up previous
Next: Quantum tunnelling through Up: Quantum tunnelling through Previous: Transmission and Reflection

WKB approximation

Compute what you would expect for transmission coefficient from the decay in the WKB approximation,

Show that in the limit , your exact result in 3.2 approaches is the product of the WKB result and the appropriate factors accounting for reflections generated by the sharp potential steps at x=0 and x=L.

Hint: You may continue the transmission coefficients for potential steps computed in lecture into the complex plane.



Prof. Tomas Alberto Arias
Tue Apr 30 08:11:46 EDT 1996