Quantum Tunneling from Bent Circular Wire

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SUMMARY

The discussion centers on calculating the tunneling probability of an electron transitioning through a bent circular pipe using the WKB approximation. The problem involves a straight pipe of circular cross-section with a significant bend radius (R≫r) and an angle (α). Participants express confusion regarding the potential energy involved and the implications of the bend on the tunneling probability, indicating that additional assumptions and numerical data are necessary for a complete solution.

PREREQUISITES
  • Understanding of quantum mechanics, specifically quantum tunneling.
  • Familiarity with the WKB approximation for tunneling probability calculations.
  • Knowledge of potential energy concepts in quantum systems.
  • Basic grasp of circular geometry and its implications in physics.
NEXT STEPS
  • Study the WKB approximation in detail to understand its application in quantum tunneling.
  • Research potential energy profiles in quantum mechanics to determine how they affect tunneling.
  • Explore the effects of geometric constraints on particle behavior in quantum systems.
  • Examine case studies involving tunneling in bent geometries for practical insights.
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Students and researchers in quantum mechanics, particularly those focused on tunneling phenomena and the application of the WKB approximation in complex geometries.

Ichigo449
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Homework Statement


The electron enters a straight pipe of circular cross section (radius r). The tube is bent at a radius R≫r by the angle α and then is aligned back again. Find the probability that the electron will jump out

Homework Equations


Tunneling probability in WKB approximation.

The Attempt at a Solution


Unsure of what the potential should be and the effect that the bend has.
 
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If that is the full problem statement, it looks odd. You'll have to add many assumptions to get a result.
 
I guess that is a very short version - it gives an idea of the problem, but it doesn't have the actual numbers necessary to solve it. Same with the other two problems.
 

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