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# Electron tunnel effect through potential barrier

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An electron with E= 1.2 eV has a probability of 10^-4 for tunneling through a potential barrier with a height of 2.4 eV.
What is the width of the potential barrier?

##### Solution Summary

This problem of determination of the width of the potential barrier is solved using the concept of transmission probability.

##### Solution Preview

The transmission probability of an electron with energy E through a potential barrier U is given by the relation :
_____
T = e-2{[√2m(U-E)]/ħ} L ................(1)

Where,

T = Transmission probability through the barrier = 10-4
m = Mass of ...

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