3. A free particle of mass m with wave number k1 travels to the right. At x = 0, the potential jumps from 0 to -vo, so that the free particle is accelerating instead of decelerating. The wave number for the incident particle is k1 again and the total energy is 2V0. a) What is the wave number for the particle in the positive region of x? b) Calculate the reflection coefficient R of the potential step.

3. A free particle of mass m with wave number k1 travels to the right. At x = 0, the potential jumps from 0 to -vo, so that the free particle is accelerating instead of decelerating. The wave number for the incident particle is k1 again and the total energy is 2V0. a) What is the wave number for the particle in the positive region of x? b) Calculate the reflection coefficient R of the potential step.