Radiative p 15N Capture in the Region of Astrophysical Energies

Abstract

In the framework of the modified potential cluster model with forbidden states the possibility of describing the available experimental data on the total cross sections and astrophysical S-factor for p 11 B radiative capture to the ground state of 12 C was treated at astrophysical energies.

Astrophysical Radiative Neutron Capture on 10B Taking into Account Resonance at 475 keV

“…Thereby, the MPCM again confirms, as already done in 25 reactions (see, e.g., Dubovichenko 2012aDubovichenko , 2012bDubovichenko , 2013aDubovichenko , 2013bDubovichenko , 2013cDubovichenko , 2013dDubovichenko , 2014aDubovichenko , 2014bDubovichenko et al 2014;Dubovichenko, Dzhazairov-Kakhramanov & Burkova 2013;Dubovichenko & Dzhazairov-Kakhramanov 2009, 2012a, 2012bDubovichenko, Dzhazairov-Kakhramanov & Afanasyeva 2013;Dubovichenko & Uzikov 2011), its ability to describe correctly the cross sections of the processes such as the radiative capture of neutral and charged particles on light nuclei at thermal and astrophysical energies. As this occurs, such results are obtained using the potentials matched with the resonance scattering phases, or with the level spectra of the final nucleus and the BS characteristics of the considered nuclei, and some basic principles of the construction of such potentials were checked partially in the three-body calculations (see, e.g., Dubovichenko, S.B.…”

“…The total radiative capture cross sections (NJ,J f ) for the ЕJ and МJ transitions in the case of the PCM are given, for example, in works (Angulo et al 1999;Dubovichenko 1995Dubovichenko , 2012aDubovichenko , 2012bDubovichenko & Dzhazairov-Kakhramanov 1997) and they have the following form:…”

Radiative Proton Capture on 3 H at Astrophysical Energies and Its Role in the Initial Stage of Star Formation

“…Earlier in our works [11][12][13][14][15][16] the possibility of description of astrophysical S-factors or total crosssections of the radioactive capture for three dozens of processes on the basis of two-body potential cluster model (PCM) was shown and also the preliminary results [17] for p 3 H-capture at astrophysical energies have been obtained. The calculations of these reactions are carried out on the basis of the modified variant of PCM with forbidden states (FSs) [18] and classification of states according to Young tableaux (MPCM).…”

“…For instance, these can be the astrophysical S-factors of the radiative capture reactions [20] or the total cross sections of these reactions [21]. Including radiative capture cross sections at the astrophysical and thermal energy range which has been considered in our previous papers [11][12][13][14][15][16]. On the basis of such conception we succeeded in the correct description of the total cross sections of the radiative capture processes of almost thirty reactions for light nuclei at thermal and astrophysical energies [11][12][13][14][15][16].…”

“…Therefore, continuing studying the thermonuclear reactions [11][12][13][14][15][16] on the basis of the MPCM [16] with separation of orbital states according to Young tableaux let us consider description of the astrophysical S-factor of the radiative proton capture on 3 H at energies of 1 keV-10 MeV and rate of this reaction from T 9 = 0.05 to T 9 = 2. Preliminary results on S-factor of this reaction at astrophysical energies in the frame of the MPCM were given in our previous work [17].…”