I`m trying to define a proton-neutron reaction in MCNP6. But I found contradictory information.

On one hand in MCNP6 manual R=4 is ''Average proton heating number'' and ''On the LA150H proton library, the only available reaction (beyond ±1,2,3,4) .. The proton multiplicity, MT=9001, 9004, 9005, etc., is generally available, along with the total cross section

and heating number, MT=1, MT=4...''

On the other hand in ENDF manual, there are a lot of reactions and (z,n) for all kind of charge particles is R=4.

It would be well writing this in the input?

F4:H 4

FM4 1.538 4 4

The number of the cell is 4.

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