Firstly, based on the setting of the scoring, what are the units of Resnucleus card and Usrbin card? According to the reaction equation between neutrons and B10, is there a 2.31 MeV fold relationship between the results of Resnucleus card and Usrbin card? Or is there any other relationship in the data results? Thank you to every expert and colleague for their answers.
The output of the RESNUCLEI card is simply the amount of residual nuclei (fully de-excited down to their ground or isomeric state) in the full BF3 region per unit primary, but since you impose a volume (314 cm3 which looks correct) it is now the quantity of residual nuclei per unit primary, per unit volume i.e. per cm3. The output of the USRBIN however is GeV per unit primary in each of the 7 regions you specified, since you requested region-by-region energy deposition scoring.
The energy deposition scoring you requested shows energy deposition by ALL particles. In any case there is no 2.31-fold relationship between the two since you also don’t specify the reaction channel that yields 2.31 MeV as you quote in the pdf. If you indeed wish to establish the connection between the two scorings I advise you to for example look at this post on activation scoring. Or extracting more elaborate information using an mgdraw.f routine in this post. If this is not the direction you want to go in please elaborate what you try to achieve.
Firstly, thank you for your response. Due to the reaction between a neutron and a boron atom, a Li particle is generated and an energy of 2.31 MeV is deposited. So I want to record the energy deposition by using the USRBIN card, and then divide it by 2.31 MeV to see if the result is consistent with the number of Li particles recorded by the RESNUCLEI card. Ideally, the results of the two should be consistent, but this is not the case in reality.
Hi @dinggz , there is no reason why they should be consistent, what you try to achieve using your approach (RESNUCLEi + USRBIN) will not give you the correlation you try to obtain. As you mention yourself in your attached pdf file, the 2.31 MeV reaction channel is not the only reaction channel. Your USRBIN scoring does not disentangle between the different contributions, also the 2.792 MeV channel will contribute (Couldn’t Fluorine in your BF3 material also produce an secondary alpha particle yield)? Please also have another look at the posts I suggested to make a more elaborate verification of your results, for example using an mgdraw.f routine. You could try to simplify you problem by checking first for a pure Boron target.