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Quantum physics potential barrier R and T

  1. Oct 6, 2014 #1
    1. The problem statement, all variables and given/known data

    Prove (6-44) wich expresses the reflection and transmission coefficients in terms of the ratio E/V0.


    2. Relevant equations

    2cprwur.png

    3. The attempt at a solution

    express k1 and k2 in terms of V/E?
     
  2. jcsd
  3. Oct 6, 2014 #2

    Matterwave

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    Are you supposed to take the second expression for R for granted and show that with the correct expressions for k1 and k2, you get the R in 6-44?

    If so, then yes, just express k1 and k2 in terms of V and E and you should get 6-44 out of it.
     
  4. Oct 6, 2014 #3
    Yes, Matterwave. How can i express k1 and k2 in terms of V and E? i have no idea

    Thank you
     
  5. Oct 6, 2014 #4

    Matterwave

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    Isn't that included in the picture? Right below the expression 6-44?
     
  6. Oct 6, 2014 #5
    If i use those expressions i can't get the expression 6-44, the books says hint: Expresses k1 and k2 in terms of V/E but i don't know what that means
     
  7. Oct 6, 2014 #6

    Matterwave

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    Using the k1 and k2 provided in the picture works just fine for me... maybe you can show the steps in your work?
     
  8. Oct 8, 2014 #7
    you are right i use R and divided by sqrt(2mE) and got the result.

    Thank you
     
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