Question 5
Consider the phenomenon of tunneling through a potential energy barrier of height V_(0) and width a, as shown in the figure below.
(a) Find the reflection coefficient R?
(b) What happens to R as a or V_(0) or both become very large?
(c) For a wide barrier, show that T_(0) can at most be 4 and that T_(0)=4 when E=(1/2)V_(0).