|Message: depth dose distribution of alpha particles using Geant4.9.5p02 and 6p02||Not Logged In (login)|
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I calculated 206 MeV/u alpha depth dose distributions in water. Physics list is FTFP_BERT. Its version is 1.3 in 4.9.5p02, and 2.0 in 6p02.
I found there is a large difference of the depth dose curves between these two versions of geant4.
Please see attached picture.
However, for other particles like proton, C-12, the difference is very small.
Who can explain the change of physics for alpha in these two different versions of FTFP_BERT?
It appears that the result from FTFP_BERT version 2.0 is more reasonable because the curve is similar to He3 particle result.
Thanks so much!
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