Wave-particle duality of solitons and solitonic analog of the Ramsauer-Townsend effect

We show that the scaling symmetry breaking in soliton scattering reveals the hidden role of the soliton self-interaction (“binding”) energy and its dramatic impact on the wave-particle duality of solitons. Solitonic analog of the de Broglie wavelength and phenomenon similar to the Ramsauer-Taunsend effect can be discovered for Schrödinger solitons

Do exotic alpha-cluster states in 12 C show signatures of alpha-condensate structure? Analysis of recent data on the a -particle inelastic scattering

The diffraction model, DWBA and the Coupled Reaction Channels analysis of the novel data of α + 12C elastic and inelastic (to the states 4.44, 7.65 and 9.64 MeV) scattering in full angular range at an incident energy of 110 MeV is presented. The diffraction radii for the ground and the first excited (4.44 MeV) states are found to be equal. The diffraction radii for the 7.65 and 9.64 MeV states are enhanced by 0.5–0.8 fm. This result shows that the radius of the Hoyle’s 0+ 2 , 7.65 MeV state in 12C is larger by a factor of ∼ 1.2 - 1.3 than that of the ground state. It is demonstrated that the direct transfer of 8Be dominates at large angles in all four reactions reported here and that the relative angular momentum L=0 corresponding to the transfer of 8Be in its ground state 0+ has predominant probability for the 0 + 2 state in comparison with the ground state of 12C. Evidence of existence of some features of alpha-condensed structure of the Hoyle’s 0+ 2 state in 12C was obtained, particularly, its enhanced radius and large contribution of alpha-particle configuration with L =

Do exotic alpha-cluster states in 12 C show signatures of alpha-condensate structure? Analysis of recent data on the a -particle inelastic scattering

The diffraction model, DWBA and the Coupled Reaction Channels analysis of the novel data of α + 12C elastic and inelastic (to the states 4.44, 7.65 and 9.64 MeV) scattering in full angular range at an incident energy of 110 MeV is presented. The diffraction radii for the ground and the first excited (4.44 MeV) states are found to be equal. The diffraction radii for the 7.65 and 9.64 MeV states are enhanced by 0.5–0.8 fm. This result shows that the radius of the Hoyle’s 0+ 2 , 7.65 MeV state in 12C is larger by a factor of ∼ 1.2 - 1.3 than that of the ground state. It is demonstrated that the direct transfer of 8Be dominates at large angles in all four reactions reported here and that the relative angular momentum L=0 corresponding to the transfer of 8Be in its ground state 0+ has predominant probability for the 0 + 2 state in comparison with the ground state of 12C. Evidence of existence of some features of alpha-condensed structure of the Hoyle’s 0+ 2 state in 12C was obtained, particularly, its enhanced radius and large contribution of alpha-particle configuration with L =

Breakup of

Calculations of breakup and direct proton transfer for the 8B+58Ni system at energies around the Coulomb barrier (EB,lab=22.95 MeV) were performed by the continuum-discretized coupled channels (CDCC) method and the coupled-reaction-channels (CRC) method, respectively. For the 7Be+58Ni interaction, we used a semimicroscopic optical model potential (OMP) that combines microscopic calculations of the mean-field double folding potential and a phenomenological construction of the dynamical polarization potential (DPP). The 7Be angular distribution at Elab=25.75 MeV from the 8B breakup on 58Ni was calculated and the spectroscopic factor for 8B → 7Be+p vertex, Sexpt = 1.10 ± 0.05, was deduced. The astrophysical S17(0) factor was calculated equal to 20.7 ±1.1 eV•b, being in good agreement with the previously reported values

Elastic scattering of 9Be+51V near the Coulomb barrier

Elastic scattering angular distributions for the 9Be+51V system were measured at three near Coulomb barrier energies, Elab = 16.35, 17.44 and 18.53 MeV. The data were analyzed by using a Semimicroscopic Optical Model. This combines a microscopic calculation of the mean-field double folding potential and a phenomenological construction of the dynamical polarization potential. The calculations reproduced the data very well and the total reaction cross sections were also calculated

Breakup of 8B on 58Ni at energies around the Coulomb barrier and the astrophysical S17(0) factor revisited

Calculations of breakup and direct proton transfer for the 8B+58Ni system at energies around the Coulomb barrier (EB,lab=22.95 MeV) were performed by the continuum-discretized coupled channels (CDCC) method and the coupled-reaction-channels (CRC) method, respectively. For the 7Be+58Ni interaction, we used a semimicroscopic optical model potential (OMP) that combines microscopic calculations of the mean-field double folding potential and a phenomenological construction of the dynamical polarization potential (DPP). The 7Be angular distribution at Elab=25.75 MeV from the 8B breakup on 58Ni was calculated and the spectroscopic factor for 8B → 7Be+p vertex, Sexpt = 1.10 ± 0.05, was deduced. The astrophysical S17(0) factor was calculated equal to 20.7 ±1.1 eV•b, being in good agreement with the previously reported values

Study of the structure of the Hoyle state by refractive α-scattering

α + 12C elastic and inelastic to the Hoyle state (0+ 2, 7.65 MeV) differential cross-sections were measured at the energies 60 and 65 MeV with the aim of testing the microscopic wave function [1] widely used in modern structure calculations of 12C. Deep rainbow (Airy) minima were observed in all four curves. The minima in the inelastic angular distributions are shifted to the larger angles relatively those in the elastic ones, which testify the radius enhancement of the Hoyle state. In general, the DWBA calculations failed to reproduce the details of the cross sections in the region of the rainbow minima in the inelastic scattering data. However, by using the phenomenological density with rms radius equal 2.9 fm, we can reproduce the Airy minimum positions.peerReviewe