3He+4He astrophysical factor study using activation method

In 1998, [2] pointed out the big difference for the S34(0) ('old' experimental data) when experimental results were grouped starting from the main two methods: S34(0) = 0.507(16)keVb for the direct capture and S34(0) = 0.572(26)keVb for the activation. Its importance for the Standard Solar Model was the reason to ask for new measurements to understand the discrepancy. 'New' results solved this issue by equalizing the above values, but introduced a new situation to clarify: a discrepancy between the S34(E) variations for 'old' and 'new' data at higher energies than ECM 1.0MeV. 'Old' theoretical models, used for extrapolating the S34(E) to the stellar energies, couldn't explain this new behavior. New experimental data was required, again, by theorists. We started this project with the main goal to clarify the situation. Here are the results.