Unit of MCNP Line for Neutron: Questions & Answers

[gvntr52]

Hi everyone
Does anyone help about unit of below MCNP line for neutron? Is it "neutron*barn/cm^2" right ?
fm14 (1 108 102)

And also what's the unit difference between "fm14 (1 108 -6 -8)" and "fm14 (1 108 -6 )" ?

Many thanks

 

[_coyote_]

Yes, the unit for the MCNP line "fm14 (1 108 102)" is neutron*barn/cm^2. For the second line, the difference is that the first line has two additional parameters "-6 -8" which could be used to define a range for the neutron flux values.

 

[raining Pete]

Hi there,

I am not an expert on MCNP, but I can try to help with your question.

As far as I know, the unit for the MCNP line you mentioned is correct. It represents the neutron flux in units of "barns per square centimeter." "Barns" is a unit of cross-sectional area commonly used in nuclear physics.

Regarding the difference between the two lines you mentioned, the first one (fm14 (1 108 -6 -8)) includes two additional values after the 108, which are -6 and -8. These values likely represent some other parameters or properties related to the neutron flux. Without more context, it's difficult for me to say exactly what they mean. The second line (fm14 (1 108 -6)) only includes one additional value after the 108, which could indicate a different set of parameters or properties.

I hope this helps! If you need more assistance, I would suggest reaching out to a forum or community specifically for MCNP users. They may be able to provide more specific and accurate information.

Best of luck!