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The 12C+12C sub-barrier fusion cross section is calculated within the framework of a Time Dependent Hartree-Fock (TDHF) based classical model using the Feynman Path Integral Method. The modified astrophysical S*-factor is compared to direct…

Nuclear Theory · Physics 2021-01-04 A. Bonasera , J. B. Natowitz

Carbon and oxygen burning reactions, in particular, $^{12}$C+$^{12}$C fusion, are important for the understanding and interpretation of the late phases of stellar evolution as well as the ignition and nucleosynthesis in cataclysmic binary…

We have measured the fusion cross sections of the 12C(13C, p)24Na reaction through off-line measurement of the beta-decay of 24Na using the beta-gamma coincidence method. Our new measurements in the energy range of Ec.m. = 2.6-3.0 MeV do…

Nuclear Experiment · Physics 2010-03-04 M. Notani , P. Davies , B. Bucher , X. Fang , L. Lamm , C. Ma , E. Martin , W. Tan , X. D. Tang , S. Thomas , C. L. Jiang

Using the Sao Paulo potential and the barrier penetration formalism we have calculated the astrophysical factor S(E) for 946 fusion reactions involving stable and neutron-rich isotopes of C, O, Ne, and Mg for center-of-mass energies E…

Solar and Stellar Astrophysics · Physics 2015-05-18 M. Beard , A. V. Afanasjev , L. C. Chamon , L. R. Gasques , M. Wiescher , D. G. Yakovlev

The $^{12}$C+$^{12}$C fusion reaction plays a significant role in the later phases of stellar evolution. For a better understanding of the evolution involved, one must understand the corresponding fusion-fission dynamics and reaction…

Nuclear Theory · Physics 2021-08-30 Shilpa Rana , Raj Kumar , M. Bhuyan

We present here a robust analytical model based on nuclear reaction theory for non-resonant fusion cross sections near Coulomb barrier. The astrophysical $S$-factors involving stable and neutron rich isotopes of C, O, Ne, Mg and Si for…

Nuclear Theory · Physics 2019-06-05 Vinay Singh , Joydev Lahiri , D. N. Basu

To determine the energy dependence of fusion cross sections at extremely low energies is crucial for various astrophysical processes. In the previous study by Jiang et al. [Phys. Rev. C75, 015803 (2007)], it was concluded that fusion cross…

Nuclear Theory · Physics 2025-12-23 Kotaro Uzawa , Kouichi Hagino

The astrophysical S-factor of the 4He-12C radiative capture is calculated in the potential model at the energy range 0.1-2.0 MeV. Radiative capture 12C(\alpha,\gamma)16O is extremely relevant for the fate of massive stars and determines if…

Nuclear Theory · Physics 2015-06-17 H. Sadeghi , R. Ghasemi , H. Khalili

Carbon fusion is important to understand the late stages in the evolution of a massive star. Astronomically interesting energy ranges for the 12C+12C reactions have been, however, poorly constrained by experiments. Theoretical studies on…

Solar and Stellar Astrophysics · Physics 2024-07-22 Gwangeon Seong , Yubin Kim , Kyujin Kwak , Sunghoon Ahn , Chaeyeon Park , Kevin Insik Hahn , Chunglee Kim

This Comment identifies errors in the formalism/implementation reported in Ref. 1 and discusses some aspects of that work that were not fully specified in the original publication. This Comment also provides reference numerical results for…

Chemical Physics · Physics 2023-02-15 Conner Masteran , Ashutosh Kumar , Nakul Teke , Bimal Gaudel , Takeshi Yanai , Edward F. Valeev

This is a reply to the comment by J. L. Alonso et al. (arXiv:1302.6146; to appear in J. Chem. Phys) on our paper A. Abedi, N. T. Maitra, and E. K. U. Gross, J. Chem. Phys. 137, 22A530 (2012) [arXiv: 1208.4388]

Chemical Physics · Physics 2015-06-16 Ali Abedi , Neepa T. Maitra , E. K. U. Gross

Among the solar fusion reactions, the rate of the $^7$Be($p,\gamma$)$^8$B reaction is one of the most difficult to determine rates. In a number of previous experiments, its astrophysical $S$-factor has been measured at $E$ = 0.1-2.5 MeV…

Solar and Stellar Astrophysics · Physics 2018-03-14 Marcell P. Takács , Daniel Bemmerer , Arnd R. Junghans , Kai Zuber

The existence of $^{12}{\rm C} + {}^{16}{\rm O}$ molecular resonances at sub-barrier energy has been a significant problem in nuclear astrophysics because they strongly affect the $^{12}{\rm C} + {}^{16}{\rm O}$ fusion reaction rate in type…

Nuclear Theory · Physics 2020-01-08 Yasutaka Taniguchi , Masaaki Kimura

We investigate the effects of plasma interactions on resonance-enhanced fusion rates in stars. Starting from basic principles we derive an expression for the fusion rate that can serve as a basis for discussion of approximation schemes. The…

Solar and Stellar Astrophysics · Physics 2015-06-04 R. F. Sawyer

The commented paper claims to provide a new expression for an energy stored around a general radiator. The major purpose of this comment is to show that the claim is unjustified. Alongside with this issue, it is pointed out that some of the…

Classical Physics · Physics 2015-09-10 Miloslav Capek , Lukas Jelinek

Determination of the accurate astrophysical S factor of {$^{12}$C($\alpha,\gamma$)$^{16}$O} reaction has been regarded as a holy grail of nuclear astrophysics for decades. In current stellar models, a knowledge of that value to better than…

We address a conflicting report on the value and uncertainty of the astrophysical cross section factor of the 12C(a,g) reaction extracted from existing data. In sharp contrast to previously reported ambiguities (by up to a factor 8),…

Nuclear Experiment · Physics 2015-06-16 Moshe Gai

This note responds to Schwartz and Hutchison's Comment (arXiv:2403.06001) on our article (DOI:10.1002/adma.202309393). We think differences have arisen not in the experimental results themselves but in their interpretation: our more…

Chemical Physics · Physics 2025-04-24 Philip A. Thomas , William L. Barnes

Recently, Davids and Typel recommended a "low" value of S_{17}(0) based on fits to published direct and Coulomb dissociation data, in which they excluded the precise result of Junghans et al. We show that their statistical analysis is…

Nuclear Experiment · Physics 2009-11-10 K. A. Snover , A. R. Junghans , E. C. Mohrmann

We investigate the fine-tuning of radiative alpha-particle capture on carbon, $\alpha(^{12}{\rm C},^{16}{\rm O})\gamma$, at astrophysical energies. Utilizing results from cluster effective field theory for this reaction, we find that the…

Nuclear Theory · Physics 2026-05-08 Ulf-G. Meißner , Bernard Ch. Metsch , Helen Meyer