The_Cambridge_Handbook_of_Physics_Formulas

94 Quantum physics
Barrier tunnelling a
incident particle
V (x)
V 0
i ii iii
Potential
function
Wavenumber
and tunnelling
constant
Amplitude
reflection
coefficient
Amplitude
transmission
coefficient
Tunnelling
probability
V (x)=
{
0 (|x| >a)
V 0 (|x|≤a)
−a
0 a x
(4.55)
¯h 2 k 2 =2mE (|x| >a) (4.56)
¯h 2 κ 2 =2m(V 0 −E) (|x|