Incorrect P(B11,3alpha) Cross Sections

Physics Processes, Models and Cross Sections
1

Geant4 Version: 11.3.2
Operating System: Sequoia 15.4.1

I am looking to recreate the following plot of P(B11,3alpha) cross sections vs proton energy (which comes from this 2016 study):

Screenshot 2025-05-01 at 11.45.39 AM
Screenshot 2025-05-01 at 11.45.39 AM926×660 38 KB

I have attempted using the Hadr03 example to test the various PhysicsLists but have not found any that accurately recreate this curve. I see from this previous post that the P(B11,3alpha) cross section is a known problem, however it sounded like an improvement would be added to v11.3 that I am not currently seeing. Therefore I am wondering if there is any update on these cross sections, or if there is anything I can do to try to implement them by hand?

Thanks!

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2

You can modify the Geant4 cross section files at your risk (if you change the yield of a particle, the yield of the others change). I am attaching the doc of the format of the database and a code that may help you to modify the files
particleHPFormat.pdf (131.4 KB)
(It does not allow me to upload the code, you may write me to pedro.arce@ciemat.es)

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