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Neutron Current Question

  1. Sep 19, 2012 #1
    Hello!

    J(Ω) = ∫n(Ω)vΩ

    This is a neutron current question. It wants me to figure out the net neutron flux (and direction) through a unit area of the xy plane. It gives an equation for n(Ω) = (1/4π)(1-cosθ), but I am trying to figure out what Ω is inside the intergrand because that is where the direction comes from.
    I know it is the unit vector, but what is it?? Since I am integrating over a solid angle, the vector should be in spherical coordinate notation? I feel like I should know this, but I am just confusing myself in the process of figuring it out.
    Any help is appreciated!

    n(Ω) - expected neutron density
    v - neutron speed - 2200m/s
    dΩ - solid angle

    DM
     
  2. jcsd
  3. Sep 19, 2012 #2
    Never mind, I think I got it..
     
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