About include files in mgdraw.f

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1

Dear FLUKA experts,

I am currently using the mgdraw.f file for calculations, and I have some questions regarding the included files. First, in trackr.inc, does JTRACK refer to the incident particle or the particle after the reaction? If I set LTACK=1, does it mean that I only want the reaction products from the first-generation incident particles?
Secondly, regarding the files fheavy.inc, genstk.inc, and resnuc.inc, what kind of products can be obtained from each of them?
Finally, when I use resnuc.inc to obtain the kinetic energy of the products, the results are either zero or negative. What could be the reason for this?

Thanks a lot in advance

Best regards

2

JTRACK gives the identity of the incident particle.
Setting the condition
IF (LTRACK.EQ.1) THEN
you limit indeed your analysis to the reaction products from the first-generation incident particles.
Light particles are found in genstk.inc, fragmentation and fission products are in fheavy.inc, as well as residual nuclei from low-energy neutron interactions, other residual nuclei are in resnuc.inc. Anyway, you may want to inspect the three of them to get the full picture of the reaction products.
If a residual nucleus is actually stored in resnuc.inc, its kinetic energy EKRES cannot take a negative value.

3

Dear Francesco,

Do you mean that the information stored in resnuc.inc does not overlap at all with what is stored in fheavy.inc and genstk.inc?

So, for reactions involving low-energy neutrons, is resnuc.inc never used?

Thank you in advance.

Best regards

4

It does not, it’s complementary.

Indeed, the residual nucleus can be found in fheavy.inc instead.