Radiative N 16O Capture at Low Energies

Thermonuclear processes for three body system in the potential cluster model

“…Here, as opposed to our previous work [17], we will consider results for the neutron capture on 2 H, when the negative sign of the neutron magnetic moment is taken into account [19]. The calculations of total cross sections of the radiative neutron capture on 2 H at the energy range 10 meV -15 MeV were done with the parameters of the p 2 H nuclear potentials for the 2 S and 2 P scattering waves from Table 1 and for the GS (36) without Coulomb component.…”

“…Such changes, because there are no the n 2 H phase shifts in the accessible for us literature at all, lie within the error band of the p 2 H elastic scattering phase shifts, which reaches the value of 10-20%. The stated procedure of construction nucleon-nucleus or cluster-nucleus potentials with the classification of states according Young tableaux allows one to obtain good results for description of the total cross sections and nuclear characteristics in 27 reactions of radiative capture at thermal and astrophysical energies [15][16][17][18][19][20]. Detailed list of all considered reactions is given in works [15][16][17][18][19][20] and books [7,12].…”

“…As a result, the MPCM based on the intercluster potentials adjusted for the elastic scattering phase shifts and GS characteristics, for which the FS structure is determined on the classification of BSs according to Young orbital tableaux and with the parameters suggested as early as 20 years ago [12], allows one correctly to describe the astrophysical S-factor for the whole range of energies under consideration. Intrinsically, in our calculations of twenty years' prescription [12], the behavior of the astrophysical S-factor of the radiative capture reaction p 2 Н  3 He in the range from 10-20 to 150-200 keV, the value of which at these energies is determined generally by the E1 transition [17,19,20].…”

“…Furthermore in works [14] we show the possibility of the correct reproduction practically all characteristics of 6 Li, including is quadrupole moment in the potential cluster model with tensor forces [10]. And finally, in works [7,9,[15][16][17][18][19][20] the possibility of description of the astrophysical S-factors or the total cross sections of the radiative capture for n He 12 C systems at thermal and astrophysical energies. These calculations of the listed above capture processes are carried out on the basis of the modified variant of PCM, described in works [7,19,21].Therefore, continuing consideration of thermonuclear processes flowing in the different objects of the Universe at the different stage of its formation and development [7], more particularly present some results in the research field of these reaction at thermal and astrophysical energies.…”

New measurements and phase shift analysis of p 16 O elastic scattering at astrophysical energies

“…The phase shift in Fig. 6 started from 180 • because, as shown in [48], the S wave should have a forbidden state. Here and further, when we use excitation functions, the cross sections obtained on the basis of the found phase shifts lay absolutely in the limit of available experimental error.…”