Consider a potential barrier defined by U(x) = 0 Uo 0 x < 0 0 < x < L x > L with Uo = 1.00 eV. An electron with energy E > 1 eV moving in the positive x- direction is incident on this potential. The transmission probability for this situation is given by
Consider a potential barrier defined by U(x) = 0 Uo 0 x < 0 0 < x < L x > L with Uo = 1.00 eV. An electron with energy E > 1 eV moving in the positive x- direction is incident on this potential. The transmission probability for this situation is given by
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![Consider a potential barrier defined by
\[
U(x) =
\begin{cases}
0 & x < 0 \\
U_0 & 0 < x < L \\
0 & x > L
\end{cases}
\]
with \( U_0 = 1.00 \text{ eV} \). An electron with energy \( E > 1 \text{ eV} \) moving in the positive \( x \)-direction is incident on this potential. The transmission probability for this situation is given by
\[
T = \frac{4(E/U_0)\left[(E/U_0) - 1\right]}{\sin^2\left[\sqrt{2m(E-U_0)}L/\hbar\right] + 4(E/U_0)\left[(E/U_0) - 1\right]}.
\]
It is found that the reflection probability is zero for \( E = 1.10 \text{ eV} \) and non-zero for smaller incident energies. What is the width of the potential barrier \( L \)?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdb6e49c2-d01d-4438-a99a-92f670cec770%2F0f0de1ed-f2ff-483d-ac85-8304db5a2d5a%2Fvwdhvy_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Consider a potential barrier defined by
\[
U(x) =
\begin{cases}
0 & x < 0 \\
U_0 & 0 < x < L \\
0 & x > L
\end{cases}
\]
with \( U_0 = 1.00 \text{ eV} \). An electron with energy \( E > 1 \text{ eV} \) moving in the positive \( x \)-direction is incident on this potential. The transmission probability for this situation is given by
\[
T = \frac{4(E/U_0)\left[(E/U_0) - 1\right]}{\sin^2\left[\sqrt{2m(E-U_0)}L/\hbar\right] + 4(E/U_0)\left[(E/U_0) - 1\right]}.
\]
It is found that the reflection probability is zero for \( E = 1.10 \text{ eV} \) and non-zero for smaller incident energies. What is the width of the potential barrier \( L \)?
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