Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

I need your help MCNP

  1. Jun 27, 2016 #1
    I don't understand about variance reduction technique. Some one explain PHYS:N, PHYS:P and cutoff. when do I use them?
    Thank you!
  2. jcsd
  3. Jun 30, 2016 #2


    Staff: Mentor

  4. Jun 30, 2016 #3
    Thank you very much. It is easy to understand.
    If I have a point isotropic source into a Cone of Directions with angle 30 degree. How to specify SIn, SPn and special SBn card. And if possible, please explain more explicit SBn card. Thanks a lot.
  5. Jun 30, 2016 #4


    User Avatar
    Staff Emeritus
    Science Advisor

    What version of MCNP is one using?
    Here is an appendix to a thesis with some discussion of PHYS:P

    Last edited: Jun 30, 2016
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted