# Quantum physics potential barrier R and T

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1. Oct 6, 2014

### kato

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

3. The attempt at a solution

express k1 and k2 in terms of V/E?

2. Oct 6, 2014

### Matterwave

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.

3. Oct 6, 2014

### kato

Yes, Matterwave. How can i express k1 and k2 in terms of V and E? i have no idea

Thank you

4. Oct 6, 2014

### Matterwave

Isn't that included in the picture? Right below the expression 6-44?

5. Oct 6, 2014

### kato

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

6. Oct 6, 2014

### Matterwave

Using the k1 and k2 provided in the picture works just fine for me... maybe you can show the steps in your work?

7. Oct 8, 2014

### kato

you are right i use R and divided by sqrt(2mE) and got the result.

Thank you