MCNP Delayed Neutron Fractions and Neutron Generation Time

[terryphi]

Hello,

I've heard that MCNP outputs delayed neutron fractions (beta) and neutron generation times (Lambda).

Any ideas as to where in the output file it writes these? I've coppied and pasted the Godiva reactor code and run it, but I can't seem to find it in there.

Best Regards,
-TP

 

[Achy47]

Dear TP,

Thank you for your question. You are correct, MCNP does output delayed neutron fractions (beta) and neutron generation times (Lambda). These values can be found in the output file under the "Neutron Multiplication and Time Constants" section.

To locate this section, you can search for the keyword "Lambda" or "beta" in the output file. This section will provide you with the values for each material and region in your simulation.

If you are still having trouble finding these values, you can also try using the MCNP Viewer tool, which allows you to easily navigate and search through the output file.

I hope this helps. Best of luck with your research.