Mechanism of the

The differential cross sections of triton from the 11B($\alpha$,t) reaction with transitions to the ground (0+) and excited states of the 12C nucleus at $E_{x} = 4.44$ MeV (2+), 7.65 MeV (0+), 9.64 MeV (3-) and 14.08 MeV (4+) have been measured at an $\alpha$-particles energy of 40 MeV. Analysis of the measured angular distributions was carried out in the framework of the coupled reaction channels method considering the contribution of the 8Be cluster exchange mechanism. It is shown that the direct mechanism with proton transfer dominates at an energy of 40 MeV, and the heavy particle transfer is noticeable only at large angles. An exception is the transition to the 14.08 MeV (4+) state, which is possible only by the transfer of the 8Be cluster. It is established that the couplings between the excited states of 12C, arising from the nonsphericity of the nucleus, have little effect on the $(\alpha, t)$ reaction cross sections in the forward hemisphere, but strongly affect the cross sections at large angles

Scattering of

Differential cross sections of elastic and inelastic scattering with excitation of states of the rotational band of the ground state of $$^{24}$$Mg were measured at an $$\alpha$$-particle energy of 50.5 MeV and $$^{3}$$He 60 MeV. The angular distributions were analyzed using an optical model and a coupled channel method. A number of potentials with significantly different geometries are obtained, which describe well the elastic scattering at the measured angular range. The collective model was used in the calculations via the coupled channel method. In addition to the ground state, three low-lying states of $$^{24}$$Mg, 2$$^{+}$$ (1.368 MeV), 4$$^{+}$$ (4.122 MeV), and 4.238 MeV (2$$^{+}$$), were included in the coupling scheme. The values of quadrupole ($$\beta _{2}$$) and hexadecapole ($$\beta _{4}$$) deformation parameters were extracted. According to the analysis of scattering of $$\alpha$$-particles, they are 0.52 and 0.05. For $$^{3}$$He, they are 0.75 and 0.07, respectively. The extracted parameters correspond to the previously obtained values from the scattering of protons, deuterons and $$\alpha$$-particles

The cluster states in light nuclei

The differential cross-sections of the elastic and inelastic α +11B scattering was measured at E(α) = 29 MeV. The analysis of the data by Modified Diffraction Model (MDM) showed that the root-mean- square (RMS) radius of the 11B state 3/2-, E* = 8.56 MeV is ~ 0.5 fm larger than that of the ground state. It is found that the radius of 3/2- (8.56 MeV) state in the 11B nucleus is close to the radii of the Hoyle state in 12C

A new proton spectra for

In this paper, we present a new measurement of the inclusive cross section (p,xp) reactions on $$^{nat}\hbox {Cu}$$ at incident energies of $$\hbox {E}_{p}=$$ 7 and 30 MeV. The (p,xp) reaction at $$\hbox {E}_{p}$$= 7 MeV on $$^{nat}\hbox {Cu}$$ is measured for the first time and (p,xp) and ($$\hbox {p,x}\alpha$$) inclusive cross section for the same target at $$\hbox {E}_{p}=$$ 30 MeV is re-measured in order to improve the quality of the previous experimental data. For both energies, the mechanism of the pre-equilibrium reactions as well as the level of energy dependence are discussed and the adequacy of the theoretical models in explaining the newly measured experimental data is also assessed by comparing the experimental data with the results of the Hauser-Feshbach and Exciton models. We use the microscopic approach based on nucleon–nucleon interaction to produce the complex nuclear potential

Investigation of the elastic and inelastic scattering of 4He from 11B in the energy range 29-50.5 MeV

We have measured the angular distributions for the elastic and inelastic scattering of 4He from 11B in the isochronous cyclotron U-150 M INP RK. The extracted α-particles beam has been accelerated to energy 29 MeV and then directed to 11B target. The experimental results were analyzed within the framework of both the optical model using different complex potential and the double folding potential obtained with different density-dependent NN interactions which give the corresponding values of the nuclear incompressibility K in the Hartree-Fock calculation of nuclear matter.peerReviewe

The cluster states in light nuclei

The differential cross-sections of the elastic and inelastic α +11B scattering was measured at E(α) = 29 MeV. The analysis of the data by Modified Diffraction Model (MDM) showed that the root-mean- square (RMS) radius of the 11B state 3/2-, E* = 8.56 MeV is ~ 0.5 fm larger than that of the ground state. It is found that the radius of 3/2- (8.56 MeV) state in the 11B nucleus is close to the radii of the Hoyle state in 12C

INVESTIGATION OF (P, XP) AND (P, XΑ) REACTIONS OF 30-MEV PROTONS WITH THE 103RH NUCLEUS

Double-differential and integral cross sections of the (p, xp) and (p, xα) reactions on the 103Rh nucleus were measured at Ep = 30 MeV using a proton beam delivered by the U-150M cyclotron of the Institute of Nuclear Physics (Almaty, Kazakhstan). A self-sustaining 103Rh foil of 3 µm thickness was used as a target. The obtained experimental results were compared with the TENDL-2019 nuclear data library, which provides the output of the TALYS nuclear model code. We assert that the TENDL-2019 evaluations provide a valid description of the obtained experimental data