I studied example Hadr03 with the neutron.mac macro, which is proposed in the example, as input.
This macro focus on the neutron capture of Boron-10.
This reaction generate a 7Li and a 4He, accompanied by a gamma in 94% of the cases.
The secondaries energies are respectively 1.01 MeV and 840 keV for the 7Li, 1.47 MeV and 1.78 MeV for the 4He and 480 keV for the gamma.
On the macro I changed the initial energy of the neutron from 1 MeV to 1 eV in order to see only the initial energy of the secondaries (neutron could be assimilated at rest).
I ploted the Lithium spectrum.
The lower energy lithium peak at 840 keV appears as a door, which is not physical.
I was expecting a peak with a gaussian fit, as obtained for the higher energy peak of the lithium and both the peaks of the alpha particle.
Is it a problem in the source code itself? Does someone knows how to solve this?
Thank you for your help,