Maybe a mistake in /examples/extended/biasing/B01?

i revised the application /examples/extended/biasing/B01, the neutron current spectrum was calculated from “cell_18” to “rest”, but big difference occured between G4_10.7 and Mcnp6, the result show below:

the error is found, the low energy neutron cross section is needed, after changing the physicsList from FTFP_BERT to Shielding, everything works well.

Fantastic information.