|Message: Re: Problem U-235 Fission||Not Logged In (login)|
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How have you defined Pu239 in your setup? If you are using a version before 8.3, please update to 8.3 or 9.0 where correct isotope handling is implemented. Note that while there is a capture cross section for Z = 94 in G4LCapture, there is no isotope-dependent cross section there. Also, due to export control requirements, there are no cross sections for Pu in the HP neutron models. Within a year we will switch to a new database which allows this, but for now we have only up to uranium.
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