|Message: Re: neutron stimulated gamma spectrum||Not Logged In (login)|
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Let' me play some numbers water 1cm3 -> 1g Fe 60PPM -> Fe 6.0E-5 [g] -> Fe ~6.5E17 atoms XS of n + Fe -> 1st Fe* is about ~1 barn at 2.5MeV Probability of the reaction per neutron (at the energy) is ~6.5E-7. Estimate number of the reaction for 1M is ~0.65. But you have 20 for the number. This difference is relatively large. For testing purpose, I enhanced for the contamination level of Fe and Cu to 6000PPM and 2000PPM respectively and comparing the energy spectra, I do not have a lot difference between them. So I could not reproduce your problem. I used the NeutronHP for this. Tatsumi
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