Dear Fluka experts,
I want to generate radiation from 218Po and all its daughters. From what I’ve read, I understand that by using sdum=ISOTOPE in BEAM card and semi-analogue decay mode it is possible to generate beta and gamma radiation, but not alpha radiation. That would be fine for me (as I can simulate the alpha radiation separately), however when I set
HI-PROPE 84 218
I get the following error messages in the Output
Error code: 12
and in the .log file
STOP Exceeded upper dp/dx abscissa.
Note: The following floating-point exceptions are signalling: IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
STOP STOP: FLUKA ABORTED
I also tried radionuclides 226Ra, 214Pb, 214Bi and 241Am with the same result. But with radionuclides undergoing the beta decay (131I, 60Co) the simulation runs and ends well.
Where could be a problem?
I have Fluka version 4.2.0. I attach the input and the generated files.