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Slit experiment

  1. Nov 19, 2013 #1
    1. The problem statement, all variables and given/known data

    Consider an electron incident on a screen with a narrow slot of width 2d. Assume
    that the electron is moving with velocity v in the direction perpendicular to the screen and
    that its wavefunction is uniformly spread over the slit and its vicinity, as shown. After going
    through the slit, the electron hits a detector screen a distance D away. Assume that d << D.

    (a)We can think of this set up as a way to measure the momentum of the electron after
    it passed through the slit. If the electron hits the detector screen at a point x away from the
    point directly ligned up with the center of the slit (see Figure), what was the x-component
    of its momentum just after it passed through the slit?

    2. Relevant equations
    p = mv

    3. The attempt at a solution

    Am I wrong to assume this is just equal to (m of electron)*sin(y)=momentum in x direction ???

    I feel like this is too easy.
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution

    Attached Files:

  2. jcsd
  3. Nov 20, 2013 #2

    Simon Bridge

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