Show that the transmittance through a potential barrier of width a may be written as T - exp (-2kza), where is defined in terms of the energy of incident particles and barrier height. [Hint: Start with the set of equations obtained by matching the boundary and continuity conditions, see class notes.]

Show that the transmittance through a potential barrier of width a may be written as T - exp (-2kza), where is defined in terms of the energy of incident particles and barrier height. [Hint: Start with the set of equations obtained by matching the boundary and continuity conditions, see class notes.]