Traversal Time for Tunnelling

摘要

We give here a simple approach to study the traversal time for tunnelling. We make use of the WKB wave functions to evaluate the velocity field of particles in the barrier region and obtain an expression for traversal time given by integral dx(m/2(V(x)-E))sup(1/2). This coincides with the expression given by recent approaches which determine traversal time by studying transmission of particles through a time-modulated rectangular barrier and by studying the extent of Larmor precession of particles through a rectangular barrier in the presence of a magnetic field. (Atomindex citation 16:018805)