Screening effects on <sup>12</sup>C+<sup>12</sup>C fusion reaction

F. Koyuncu; A. Soylu

doi:10.1088/1674-1137/42/5/054106

Chinese Physics C> 2018, Vol. 42> Issue(5) : 054106 DOI: 10.1088/1674-1137/42/5/054106

Screening effects on ¹²C+¹²C fusion reaction

F. Koyuncu ^, ,
A. Soylu

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One of the important reactions for nucleosynthesis in the carbon burning phase in high-mass stars is the ¹²C+¹²C fusion reaction. In this study, we investigate the influences of the nuclear potentials and screening effect on astrophysically interesting ¹²C+¹²C fusion reaction observables at sub-barrier energies by using the microscopic α-α double folding cluster (DFC) potential and the proximity potential. In order to model the screening effects on the experimental data, a more general exponential cosine screened Coulomb (MGECSC) potential including Debye and quantum plasma cases has been considered in the calculations for the ¹²C+¹²C fusion reaction. In the calculations of the reaction observables, the semi-classical Wentzel-Kramers-Brillouin (WKB) approach and coupled channel (CC) formalism have been used. Moreover, in order to investigate how the potentials between ¹²C nuclei produce molecular cluster states of ²⁴Mg, the normalized resonant energy states of ²⁴Mg cluster bands have been calculated for the DFC potential. By analyzing the results produced from the fusion of ¹²C+¹²C, it is found that taking into account the screening effects in terms of MGECSC is important for explaining the ¹²C+¹²C fusion data, and the microscopic DFC potential is better than the proximity potential in explaining the experimental data, also considering that clustering is dominant for the structure of the ²⁴Mg nucleus.
- nuclear fusion ,
- nucleosynthesis ,
- screening effects ,
- clustering ,
- potential model

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F. Koyuncu and A. Soylu. Screening effects on ¹²C+¹²C fusion reaction[J]. Chinese Physics C, 2018, 42(5): 054106. doi: 10.1088/1674-1137/42/5/054106

F. Koyuncu and A. Soylu. Screening effects on ¹²C+¹²C fusion reaction[J]. Chinese Physics C, 2018, 42(5): 054106. doi: 10.1088/1674-1137/42/5/054106 shu

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Received: 2018-01-04
Revised: 2018-03-05

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Supported by the Turkish Science and Research Council (TBITAK) with (117R015)

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Screening effects on ¹²C+¹²C fusion reaction

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Screening effects on 12C+12C fusion reaction

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Screening effects on ¹²C+¹²C fusion reaction

Screening effects on ¹²C+¹²C fusion reaction