Phase analysis of elastic p 6Li scattering at astrophysical energies

Dzhazairov-Kakhramanov

2012

Int. J. Mod. Phys. E

Astrophysical S-factors of radiative capture reactions on light nuclei have been calculated in a two-cluster potential model, taking into account the separation of orbital states by the use of Young schemes. The local two-body potentials describing the interaction of the clusters were determined by fitting scattering data and properties of bound states. The many-body character of the problem is approximatively accounted for by Pauli forbidden states. An important feature of the approach is the consideration of the dependence of the interaction potential between the clusters on the orbital Young schemes, which determine the permutation symmetry of the nucleon system. Proton capture on 2 H, 6 Li, 7 Li, 12 C, and 13 C was analyzed in this approach. Experimental data at low energies were described reasonably well when the phase shifts for cluster-cluster scattering, extracted from precise data, were used. This shows that decreasing the experimental error on differential elastic scattering cross sections of light nuclei at astrophysical energies is very important also to allow a more accurate phase shift analysis. A future increase in precision will allow more definite conclusions regarding the reaction mechanisms and astrophysical conditions of thermonuclear reactions.

Section: Astrophysical S-factorsupporting

confidence: 65%

“…We have done the р 6 Li phase shift analysis of the elastic scattering in Ref. 49 and the general pattern of the 2 S and 4 S-phase shifts of scattering is shown in Fig. 2.…”

Section: Potential Description Of Scattering Phase Shiftsmentioning

confidence: 99%

See 1 more Smart Citation

EXAMINATION OF THE ASTROPHYSICAL S-FACTORS OF THE RADIATIVE PROTON CAPTURE ON ²H, ⁶Li, ⁷ Li, ¹²C AND ¹³C

Dzhazairov-Kakhramanov

2012

Int. J. Mod. Phys. E

“…Let us give firstly the basic expressions for the phase shift analysis of the p 14 C elastic scattering and note that earlier we already have performed the phase shift analysis in systems p 6 Li [34], n 12 C [35], p 12 C [36], 4 He 4 He [37], 4 He 12 C [38], p 13 C [39], and n 16 O [40], meanwhile, essentially at astrophysical energies [21].…”

Section: Methods Of Calculationmentioning

confidence: 99%

Astrophysical S-factor of the radiative proton capture on ¹⁴C at low energies

Burtebaev

Dzhazairov-Kakhramanov

et al. 2014

Mod. Phys. Lett. A

The phase shift analysis for position location of the 2 S 1/2 resonance at 1.5 MeV was carried out on the basis of the known experimental measurements of the excitation functions of the p 14 C elastic scattering at four angles from 90 to 165 and more than 100 energy values in the range from 600-800 to 2200-2400 keV. Also, the possibility to describe the available experimental data on the astrophysical S-factor for the proton capture reaction on 14 C to the ground state of 15 N at astrophysical energies was considered in the frame of modified potential cluster model. PACS Number(s): 21.60.Gx, 25.20.Lj, 25.40.Lw, 26.20.Np, 26.35.+c, 26.50.+x, 26.90.+n, 98.80

“…First it should be noted that below 0.7-0.8 MeV the ambiguity of the data [49] increases dramatically, however, to extract 2 D 3/2 scattering phase shift is sufficient to consider the energy region shown in figure 1, which has a relatively small ambiguities and these data may be well used for carrying out the phase analysis. Earlier, we have performed the phase analysis in the similar systems n 12 C [11,52], p 12 C [53], p 6 Li [54], and p 13 C [55,56], mainly at the astrophysical energies. show the results of phase analysis [45]; triangles (▲) correspond to the results of the analysis [47]; solid curve is the calculation of phase shift with the potential given in the text.…”

Section: Phases and Potentialsmentioning

confidence: 99%

Radiative Capture of Neutrons on 12C at Astrophysical Energies

2013

Russ Phys J

Self Cite

The total cross sections of the 16 O(n, γ) 17 O radiative capture process is described in the framework of the modified potential cluster model with the classification of orbital states according to Young tableaux. The possibility to describe the experimental data for the total cross sections of the neutron radiative capture on 16 O at the energies from 0.025 eV to 1.5 MeV is shown on the basis of E1 and M1 processes. The transitions to the bound states of 17 O in the n 16 O channel from 2 S 1/2 , 2 Р 3/2 and 2 D 3/2 waves of the n 16 O scattering have been considered. These transitions have been considered in the resonance energy region at 433 and 1000 keV.PACS numbers: 21.60. Gx, 25.40.Lw, 26.20.Np, 26.35.+c, 26.50.+x, 26.90.+n, 98.90Here, m is mass of the nucleus,  1 ,  2 are the magnetic moments of clusters and the remaining symbols are the same as in the previous expression. The value of