Hi All,(adsbygoogle = window.adsbygoogle || []).push({});

I have a question regarding the WKB method for computing tunnelling through barriers.

I understand the method and the ability to arrive at a solution as given in the first part (summary) of the first page here:

http://www.physics.udel.edu/~msafrono/425/Lecture 18.pdf

Is it correct to say that the tunneling probability is given by

[tex] \left| \frac{\psi(b)}{\psi(a)}\right|^2[/tex] where a is the classical turning point and b is the end of the barrier?

If so, and one had some arbitrary potential barrier, does one not need to take into account the [tex] \frac{1}{\sqrt{p}}[/tex] factors evaluated at these end points (i.e. higher order terms in the WKB approx)? Does this give the accurate prefactor to the transmission probability T?

Cheers!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Quantum tunnelling decay time

Loading...

Similar Threads for Quantum tunnelling decay |
---|

I Source of energy for quantum tunneling of a particle |

I Concepts to understand Quantum Tunneling |

B Quantum tunneling |

I Quantum Tunneling Max Distance |

I (Conceptual) Infinity energy via quantum tunneling & Nuclear Fusion? |

**Physics Forums | Science Articles, Homework Help, Discussion**