WKB approximation for multichannel barrier penetrability
Journal Article
·
· Physical Review. A
- Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
Using the method of the local transmission matrix, we generalize the well-known WKB formula for barrier penetrability to multichannel systems. We compare the WKB penetrability with a solution of the coupled-channels equations, and show that the WKB formula works well at energies well below the lowest adiabatic barrier. We also discuss the eigenchannel approach to a multichannel tunneling, which may improve the performance of the WKB formula near and above the barrier.
- OSTI ID:
- 20645998
- Journal Information:
- Physical Review. A, Vol. 70, Issue 3; Other Information: DOI: 10.1103/PhysRevA.70.032106; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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