Hi,
As introduced by EneaMapelli in the post of 25 July, there are some errors in the decay data of the Pa233.
In fact, if i compare the simulated spectrum with the measured one there are a lot of differences.
These problems were not present in a previous version of the photonevaporation data (i don’t remember the version, but published with Geant 4.9.6, now i’m on version 5.3).
A big one (from z92.a233 photonevaporation data):
There are a transition from the 415.758 keV level of the U233 with a relative branching ratio of 100% (so equal to 1.73 % of absolute BR from ENSDF data) with an energy of 61.968 keV that has almost 100 % probability to make internal conversion (IC coefficient 5908).
This decay populates the 353.79 keV level. This level should not be populated with a so high BR, (in fact it is not present in the simplified decay scheme of Pa233-U233).
This level decays (with a very high BR) with the emission of gamma-rays (198.56, 261.63, 313.44) that are not present in the measured spectrum.
If i calculate the BR of the 313.44 keV gamma ray, i obtain a 0.84% of absolute BR, but the ENSDF indicate a BR of 0.0139% for this gamma transition.
I didn’t check but should be other errors in these data, because, as mentioned by EneaMapelli, there also a higher population of the 298.81 keV level that seems to be not correlated with the transition mentioned above.
I hope that the authors could make a check of these data as soon as possible because the simulation is very far away from the experimental data.
Thank you very much for your help
Andrea
