Fusion cross sections for 12C + 12C, 12C + 13C and 13C + 13C at low energies

Dasmahapatra, B.; Čujec, Bibiana; Lahlou, F.

doi:10.1016/0375-9474(82)90316-5

Cited by 60 publications

(73 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Considering the 15% systematic error of Ref. [15] and the 30% systematic error quoted in the Dayras experiment [12], both works agree well with each other. Since our experiment requires the branching ratio information from the Dayras measurement [12], we can only normalize our data to the Dayras data at E c.m.…”

Section: In 1960 Almqvist Kuehner and Bromley Discovered Several Ressupporting

confidence: 77%

“…< 5 MeV, the total fusion cross sections from this measurement are about 10% higher than the ones obtained from the Dayras measurement [12]. At low energies, the total fusion cross section from this measurement gradually decreases to about 14% below the Dayras measurement [15]. Considering the 15% systematic error of Ref.…”

Section: In 1960 Almqvist Kuehner and Bromley Discovered Several Resmentioning

confidence: 60%

“…There is another measurement on 12 C+ 13 C using the total-γ-ray-yield method in the center of mass energy range of 3.1 MeV to 6.7 MeV [15]. For energies 4 MeV<E c.m.…”

Section: In 1960 Almqvist Kuehner and Bromley Discovered Several Resmentioning

confidence: 99%

See 2 more Smart Citations

Correlation between the12C+12C,12C+
Notani
¹
,
Esbensen
²
,
Fang
³

et al. 2012
Phys. Rev. C

View full text Add to dashboard Cite

The fusion cross section for 12 C+ 13 C has been measured down to Ec.m.=2.6 MeV at which the cross section is of the order of 20 nb. By comparing the cross sections for the three carbon isotope systems, 12 C+ 12 C, 12 C+ 13 C and 13 C+ 13 C, it is found that the cross sections for 12 C+ 13 C and 13 C+ 13 C provide an upper limit for the fusion cross section of 12 C+ 12 C over a wide energy range. After calibrating the effective nuclear potential for 12 C+ 12 C using the 12 C+ 13 C and 13 C+ 13 C fusion cross sections, it is found that a coupled-channels calculation with the Incoming Wave Boundary Condition (IWBC) is capable of predicting the major peak cross sections in 12 C+ 12 C. A qualitative explanation for this upper limit is provided by the Nogami-Imanishi model and level density differences among the compound nuclei. It is found that the strong resonance found at 2.14 MeV in 12 C+ 12 C exceeds this upper limit by a factor of more than 20. The preliminary result from the most recent measurement shows a much smaller cross section at this energy which agrees with our predicted upper limit.

show abstract

Section: In 1960 Almqvist Kuehner and Bromley Discovered Several Ressupporting

confidence: 77%

Section: In 1960 Almqvist Kuehner and Bromley Discovered Several Resmentioning

confidence: 60%

See 1 more Smart Citation

Correlation between the12C+12C,12C+
Notani
¹
,
Esbensen
²
,
Fang
³

et al. 2012
Phys. Rev. C

View full text Add to dashboard Cite

show abstract

“…A general scenario for a massive star of about ten times the solar mass implies that after the helium burning process its core consists predominantly of the 12 C and 16 O ashes. As soon as this core begins to collapse gravitationally igniting the 12 C and 16 O ashes into the 12 C+ 12 C, 12 C+ 16 O, and 16 O+ 16 O fusion reactions, the first reaction is more favorable because it has the lowest Coulomb barrier. It also generates the heavier nuclei like 23 Na, 20 Ne, and 23 Mg for the next burning stage of the stellar evolution.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the compound 24 Mg * nucleus is highly excited and has a large number of overlapping states with the partial widths of the light particle emissions (neutron, proton and α) dominating the γ-ray emission width. The main decay products of the compound 24 Mg * nucleus are 23 Na, 20 Ne, and 23 Mg in the 12 C( 12 C,p) 23 Na (Q = 2241 keV), 12 C( 12 C,α) 20 Ne (Q = 4617 keV), and 12 C( 12 C,n) 23 Mg (Q = -2599 keV) reaction channels, respectively, while the remaining processes such as 12 C( 12 C,γ) 24 Mg, 12 C( 12 C, 8 Be) 16 O are less important at astrophysical energies [3]. In these channels, the 12 C( 12 C,p) 23 Na and 12 C( 12 C,α) 20 Ne reactions dominate the total 12 C+ 12 C fusion cross section with about equal probabilities for proton and α emissions.…”

Section: Introductionmentioning

confidence: 99%

Mean-field Study of \(^{12}\)C+\(^{12}\)C Fusion

Chien¹,

Cuong²,

Khoa³

2015

Comm. in Phys.

View full text Add to dashboard Cite

Abstract. The nuclear mean-field potential arising from the 12 C+ 12 C interaction at the low energies relevant for the astrophysical carbon burning process has been constructed within the double-folding model, using the realistic nuclear ground-state density of the 12 C nucleus and the effective M3Y nucleon-nucleon (NN) interaction constructed from the G-matrix of the Paris (free) NN potential. To explore the nuclear medium effect, both the original density independent M3Y-Paris interaction and its density dependent CDM3Y6 version have been used in the folding model calculation of the 12 C+ 12 C potential. The folded potentials at the different energies were used in the optical model description of the elastic 12 C+ 12 C scattering at the energies around and below the Coulomb barrier, as well as in the barrier penetration model to estimate the fusion cross section and astrophysical S factor of the 12 C+ 12 C reactions at the low energies. The obtained results are in good agreement with experimental data over a wide range of energies.

show abstract

Systematics of the fusion cross sections for the p-shell nuclei

Čujec

Fusion Reactions Below the Coulomb Barrier

View full text Add to dashboard Cite

Fusion cross sections for 12C + 12C, 12C + 13C and 13C + 13C at low energies

Cited by 60 publications

References 21 publications

Correlation between the12C+12C,12C+
Notani
¹
,
Esbensen
²
,
Fang
³

et al. 2012
Phys. Rev. C

Correlation between the12C+12C,12C+
Notani
¹
,
Esbensen
²
,
Fang
³

et al. 2012
Phys. Rev. C

Mean-field Study of \(^{12}\)C+\(^{12}\)C Fusion

Systematics of the fusion cross sections for the p-shell nuclei

Contact Info

Product

Resources

About

Fusion cross sections for 12C + 12C, 12C + 13C and 13C + 13C at low energies

Cited by 60 publications

References 21 publications

Correlation between the12C+12C,12C+Notani1, Esbensen2, Fang3 et al. 2012Phys. Rev. C

Correlation between the12C+12C,12C+Notani1, Esbensen2, Fang3 et al. 2012Phys. Rev. C

Mean-field Study of \(^{12}\)C+\(^{12}\)C Fusion

Systematics of the fusion cross sections for the p-shell nuclei

Contact Info

Product

Resources

About

Correlation between the12C+12C,12C+
Notani
¹
,
Esbensen
²
,
Fang
³

et al. 2012
Phys. Rev. C

Correlation between the12C+12C,12C+
Notani
¹
,
Esbensen
²
,
Fang
³

et al. 2012
Phys. Rev. C