While analysing the output files of SOURCES 4D, I noticed an inconsistency in the total neutron spectrum reported in tape7. Tape7 should contain the absolute total neutron spectrum, but, in some cases, it appears to be the normalized total neutron spectrum. The same issue can be observed for the absolute total neutron spectrum in outp2.
Additionally, the normalized total neutron spectrum reported in tape8, outp2 and outp seems to be normalized starting from the (already normalized) spectrum in tape7 or outp. Therefore, the normalized total neutron spectrum is actually normalized twice.
This behaviour seems to occur in cases where the neutron spectrum does not have a contribution from spontaneous fission. For example, considering the test cases provided in this repository, this issue can be observed in test3 and test6.
While analysing the output files of SOURCES 4D, I noticed an inconsistency in the total neutron spectrum reported in tape7. Tape7 should contain the absolute total neutron spectrum, but, in some cases, it appears to be the normalized total neutron spectrum. The same issue can be observed for the absolute total neutron spectrum in outp2.
Additionally, the normalized total neutron spectrum reported in tape8, outp2 and outp seems to be normalized starting from the (already normalized) spectrum in tape7 or outp. Therefore, the normalized total neutron spectrum is actually normalized twice.
This behaviour seems to occur in cases where the neutron spectrum does not have a contribution from spontaneous fission. For example, considering the test cases provided in this repository, this issue can be observed in test3 and test6.