Quantum tunnelling for a finite-square potential parrier

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SUMMARY

The discussion centers on a quantum mechanics problem involving a proton with a kinetic energy of 10 eV encountering a finite-square potential barrier of height 12 eV and width 0.2 nm. Participants clarify that the phrase "the amount of the particle on both sides" refers to the transmission (T) and reflection (R) probabilities of the particle after interacting with the barrier. The probabilities T and R represent the likelihood of finding the particle on either side of the barrier after the collision, which is a fundamental concept in quantum tunneling.

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  • Understanding of quantum mechanics principles, particularly quantum tunneling.
  • Familiarity with potential barriers in quantum physics.
  • Knowledge of kinetic and potential energy concepts.
  • Basic grasp of probability theory as it applies to quantum mechanics.
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  • Study the mathematical derivation of transmission and reflection coefficients in quantum mechanics.
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  • Learn about the Schrödinger equation and its role in analyzing particle behavior in potential barriers.
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Students and professionals in physics, particularly those focusing on quantum mechanics, as well as anyone interested in the behavior of particles in potential barriers and quantum tunneling phenomena.

blaksheep423
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Homework Statement


At x=0, a proton with a kinetic energy of 10 eV is traveling in the x direction (potential energy = 0). At x = 1nm, it encounters a potential barrier of height 12 eV and width .2nm. The potential returns to 0 at x = 1.2nm.

Give the amount of the particle on both sides of the barrier after the collision.


Homework Equations


T - Probability of Transmission
R - Probability of Reflection


The Attempt at a Solution



Actually my question here isn't about the exact solution. Does anyone know what is meant by "the amount of the particle on both sides"? is this just another way of asking for T and R?
 
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"amount of the particle on both sides" doesn't really make sense, but I guess it's supposed to mean T and R - the late-time probabilities of the particle being found on either side of the barrier. I can't think of anything else interesting that you could be expected to find.
 

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