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S-factor of reaction at low-energies
1Department of Physics, Faculty of Sciences, Arak University, Arak 38156-8-8349, Iran.
Results in Physics
|August 18, 2018
Summary
Researchers studied the astrophysical S-factor for the Helium-3 (³He) + Helium-4 (⁴He) reaction. This reaction is crucial for understanding energy generation in massive stars, with results aligning well with experimental data.
Area of Science:
- Nuclear astrophysics
- Stellar nucleosynthesis
- Low-energy nuclear reactions
Background:
- The Helium-3 (³He) + Helium-4 (⁴He) reaction is a key process in stellar energy generation.
- Understanding this reaction is vital for models of massive stars after their hydrogen-burning phase.
Purpose of the Study:
- To investigate the astrophysical S-factor for the ³He + ⁴He reaction at low bombarding energies (1-1.30 MeV).
- To provide theoretical calculations for comparison with experimental measurements.
Main Methods:
- Utilized the Wood-Saxon potential model for theoretical calculations.
- Calculated non-resonant astrophysical S-factors for the ³He + ⁴He transition.
Main Results:
- Theoretical astrophysical S-factor calculated at 1.30 MeV is 5.0 ± 0.2 MeVb.
- This theoretical value shows good agreement with the experimental measurement of 5.1 ± 0.3 MeVb (Couch et al., 1971).
Conclusions:
- The theoretical calculations using the Wood-Saxon model accurately reproduce the experimental astrophysical S-factor for the ³He + ⁴He reaction.
- This study validates the model's applicability for understanding stellar nucleosynthesis processes.
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