Consider a beam of particles which is incident on a potential barrier, and assume that the potential-energy function is constant in the domains of the incident and transmitted beams. The wavefunctions representing incident, reflected and transmitted particles are given by V:(1, t) = Ae (k12–wit), V.(x,t) = Be¬i(k12+wit) and V.(x,t) = Ce(ka=–-wat), respectively. a) The current density is defined by J = 2mi Calculate the incident, reflected and transmitted current densities (J;, J,, and Jt, respectively). b) Express the transmission coefficient T = |Jt/J;| and the reflection coefficient R = |Jr/J;| in terms of A, B, C, ki and k2.
Consider a beam of particles which is incident on a potential barrier, and assume that the potential-energy function is constant in the domains of the incident and transmitted beams. The wavefunctions representing incident, reflected and transmitted particles are given by V:(1, t) = Ae (k12–wit), V.(x,t) = Be¬i(k12+wit) and V.(x,t) = Ce(ka=–-wat), respectively. a) The current density is defined by J = 2mi Calculate the incident, reflected and transmitted current densities (J;, J,, and Jt, respectively). b) Express the transmission coefficient T = |Jt/J;| and the reflection coefficient R = |Jr/J;| in terms of A, B, C, ki and k2.
Related questions
Question
![Consider a beam of particles which is incident on a potential barrier, and assume that the potential-energy
function is constant in the domains of the incident and transmitted beams. The wavefunctions representing
incident, reflected and transmitted particles are given by
V:(1, t) = Ae (k12–wit), V.(x,t) = Be¬i(k12+wit) and V.(x,t) = Ce(ka=–-wat),
respectively.
a) The current density is defined by
J =
2mi
Calculate the incident, reflected and transmitted current densities (J;, J,, and Jt, respectively).
b) Express the transmission coefficient T = |Jt/J;| and the reflection coefficient R = |Jr/J;| in terms of A, B,
C, ki and k2.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fef60a5b9-f403-4129-97fe-1e552597b35e%2Fddc7b2a4-aee0-4ccd-8d22-df9eac321bd3%2Fxptw3qm.png&w=3840&q=75)
Transcribed Image Text:Consider a beam of particles which is incident on a potential barrier, and assume that the potential-energy
function is constant in the domains of the incident and transmitted beams. The wavefunctions representing
incident, reflected and transmitted particles are given by
V:(1, t) = Ae (k12–wit), V.(x,t) = Be¬i(k12+wit) and V.(x,t) = Ce(ka=–-wat),
respectively.
a) The current density is defined by
J =
2mi
Calculate the incident, reflected and transmitted current densities (J;, J,, and Jt, respectively).
b) Express the transmission coefficient T = |Jt/J;| and the reflection coefficient R = |Jr/J;| in terms of A, B,
C, ki and k2.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 5 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)