k-Eigenvalue Filter

User Support
1

Hi! I am a new OpenMC user. Could someone help me with the information that,

Is it possible to calculate the k-eigenvalue with only prompt neutron fission?

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2

Right now we donā€™t have any way of doing this directly. Iā€™ve had numerous people ask about this though, usually in the context of trying to estimate beta-effective. Iā€™ve previously put together a patch which changes the behavior of the code to only use prompt neutrons. To use it, you would need to need to get the OpenMC git repository, apply the diff on the ā€˜developā€™ branch, and compile/reinstall the code.

Best,
Paul

3

Thank you sir.

4

Hello paul,

Sorry, i not understand yet how to apply ā€œpromptā€ method in openMC practically. Could you explain more detail about this?

Thanks,
Anas