| Figure 1: Cf252 Neutron Spectrum |
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The points given above is the input Cf252 neutron spectrum. Ignore the line to the left of the first point;the line is there just to give an idea of how the spectrum curve looks.
In the real input spectrum, the probability cuts off at 1 MeV. Compare this with the outputs for the simulated incident neutron kinetic energy, given below:
| Figure 2: Generated kinetic energy, Cf252 neutron spectrum as input to Monte Carlo |
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The curve matches the input spectrum well; this seems to indicate that we can be confident in inputting arbitrary spectra into the sim.
However, we need to be confident on which spectrum we hope to implement. For example, a question on the SLAC forums was answered with the following Cf252 neutron spectrum (both plotted):
I could easily implement a gamma spectrum, but I'm unsure as to which source might be reliable for this purpose. I know that, for example, a gamma spectrum might be found here (https://web-docs.gsi.de/~wolle/FISSION/PAPERS/z_phys_a_356.pdf) but I'm unsure if this is what we want.
