Biasing for (α,n), (α,γ) reactions

SoLAr-Neutrinos / SOLAr-sim

SoLAr project simulation framework

MIT License

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Biasing for (α,n), (α,γ) reactions #20

Closed dguff closed 1 year ago

dguff commented 1 year ago

Explore the possibility of biasing the (α,n) and (α,γ) reactions to obtain a reasable simulation efficiency See e.g. this presentation

Here is a to-do list for the next steps:

[x] use HP physics for low-energy ions
[x] develop an interface to access the differential cross section and plot it
[ ] Check cross section for (α,γ) reaction
[ ] validate the results for (α,γ) and (α,n) reactions

dguff commented 1 year ago

Note that in order to use the HP (high precision) particle processes for low-energy ions one should download the G4TENDL data library (not included in the "default" Geant4 data files). In commit 34476aa I switched from the FTFP_BERT_HP to the QGSP_BIC_AllHP physics list as a base for SOLAr-sim because it automatically includes the HP processes for alphas.

dguff commented 1 year ago

With the QGSP_BIC_AllHP Physics list (α,n) reactions are produced with the HP Particle process. However, no (α,γ) reactions are yet found.

dguff commented 1 year ago

Methods and commands to write the total cross section to the output added in 3e83575