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New experimental data for differential cross-sections of the 14C( 11B, 12C) 13B reaction obtained recently at the energy Еlab( 11B) = 45 MeV for the ground states of 13B and 12C were analyzed within the coupled reaction channels (CRC) method that included the 11B + 14C elastic scattering channel as well as channels for one- and two-step transfers of nucleons in the coupling scheme. The necessary 11B + 14C Woods - Saxon (WS) optical potential parameters for the entrance reaction channel were obtained from 11B elastic scattering in the previous work, while those for 12C + 13B interaction were deduced from fitting the CRC calculations to the 14C( 11B, 12C) 13B reaction data. Needed spectroscopic amplitudes of transferred nucleons and clusters were calculated within the translational-invariant shell model. The data are well described by the direct transfer of a proton while contributions from two-step transfers were found to be negligible. The deduced 13B + 12C WS optical potential parameters are compared with those of the 10,11,12B + 12C nuclei interactions. The effect of isotopic differences in these interactions was observed. [ABSTRACT FROM AUTHOR]

Complete angular distributions including both forward and backward angles are reported for the 14C(11B,10B)15C reaction at Elab(11B)=45 MeV for the ground and excited states of 10B and 15C. The experimental data were analyzed within the coupled reaction channels method that included the 11B+14C elastic scattering channel as well as channels for one- and twostep transfers of nucleons in the coupling scheme. The necessary 11B+14C optical potential parameters were obtained from previous work, while those for 10B+15C were deduced from fitting the CRC reaction calculations to the 14C(11B,10B)15C reaction data. Needed spectroscopic amplitudes of transferred nucleons and clusters were calculated within the translationalinvariant shell model. The data are well described by neutron transfers, while contributions from two-step transfers were found to be negligible. Recently published global optical potentials for the elastic scattering of the 8;10;11B isotopes were tested as part of the analysis and found to satisfactorily describe this reaction data if the surface imaginary potentials were omitted for both the entrance and the exit channels, and the parameters for volume real and imaginary potentials were slightly modified. [ABSTRACT FROM AUTHOR]

Complete angular distributions including both forward and backward angles are reported for the reaction 13C(11B, 12C)12B at Elab(11B) = 45 MeV leading to the ground and excited states of 12C and 12B. This reaction explores the interplay of proton and neutron transfers as well of those for larger clusters. The experimental data were analyzed within the coupled-reaction-channels method (CRC) that included the 13C+11B elastic scattering channel as well as channels for one- and two-step transfers of nucleons in the coupling scheme. The necessary 13C+11B optical potential parameters were obtained from previous work, while those for 12C + 12B were deduced from fitting the calculations to the 13C(11B, 12C)12B reaction data. Needed spectroscopic amplitudes of transferred nucleons and clusters were calculated within the translational-invariant shell model (TISM). The data are well-described by proton transfers while contributions from neutron transfer are only important at the largest angles. New global optical potentials for the elastic scattering of 8,10,11B isotopes were tested and found to describe the forward angles reaction data but not those for the middle and larger angles even when the ground-state reorientation of 11B in the entrance channel is included. [ABSTRACT FROM AUTHOR]

Angular distributions of the 15N+12C elastic and inelastic scattering were measured at Elab(15N) = 81 MeV to study the nuclear-nuclear interactions and possible transfer contributions to the scattering. The data were analyzed with the coupled-reaction-channels (CRC) method using the 15N+12C optical potential ofWoods-Saxon shape. The elastic and inelastic scattering as well as the most obvious one- and two-step transfer reactions were included in the channel-coupling scheme. The 15N+12C optical potential and deformation parameters of 15N were deduced. The transfer reaction contributions to the 15N+12C elastic and inelastic scattering channels were estimated. The 15N+12C elastic scattering at 81 MeV was compared with the 14N+12C elastic scattering of 14N beam energy 78 MeV. [ABSTRACT FROM AUTHOR]

Detailed study of the behavior of experimental differential cross sections for the 16O + 12C-, 12C + 12C-elastic scattering in the energy range from 1 to 200 MeV/nucleon have been carried out. It is found that differential cross sections in the range of transfer momentum from 0 to 3-4 fm-1 shows the diffraction character for scattering in the overall energy range. The behavior features of the allocations of the first eight diffraction maxima and minima as well values of crosssections in the maxima at the change of the interaction energy have been analyzed. It has been received energydependent optical potentials of the interaction for examines systems at the full range of energies. The obtained potentials describe the available experimental data satisfactorily and reproduce typical features of diffractive scattering cross sections. [ABSTRACT FROM AUTHOR]

Abstract: Inverse kinematics scattering of 18O on 6Li at E lab(18O) = 114 MeV was measured to obtain elastic and inelastic scattering cross sections. In this way cross sections for excited states in 6Li and 18O were determined. The data were analyzed within the optical model and coupled reaction channel method. The 6Li + 18O optical potential as well as the 6Li and 18O deformation parameters were deduced. Contributions of different nuclear processes to the 6Li + 18O elastic and inelastic scattering were explored. The isotopic differences between the 6,7Li + 18O and 6Li + 16,18O potential parameters were determined. [Copyright &y& Elsevier]

Angular distributions of the 7Li + 12C elastic and inelastic scattering as well as the 7Li(14N, X) reactions with exited stable and unstable nuclei with Z = 3-6 were measured at Elab(12C) = 115 MeV. The data were analyzed within the optical model and coupled-reaction-channels method. The elastic and inelastic scattering, reorientations of 7Li in ground and excited states as well as more important transfer reactions were included in the channels-coupling-scheme. 7Li + + 12C optical potential parameters for ground and excited states of 7Li and 12C as well as deformation parameters of these nuclei were deduced. The contributions of one- and two-step transfers in the 7Li + 12C elastic and inelastic scattering channels were estimated. [ABSTRACT FROM AUTHOR]

New experimental data for differential cross sections of the 14C(11B, 9Be)16N reaction were measured for the ground states of 9Be and 16N nuclei as well as for the excited states of 16N at the energy Elab.(11B) = 45 MeV. The reaction data were analyzed within the coupled-reaction channels method (CRC) for one- and two-step transfers of nucleons and clusters. In the CRC-calculations, the optical potential deduced from the analysis of the 11B + 14C elastic scattering data was used for the entrance reaction channel. Needed spectroscopic amplitudes of nucleons and clusters in nuclei were calculated within shell-model. 9Be + 16N optical potential parameters were deduced by fitting CRC cross-sections to the 14C(11B, 9Be)16N reaction data. Contributions of one- and two-step transfers of nucleons and clusters into the 14C(11B, 9Be)16N reaction cross-sections were obtained. [ABSTRACT FROM AUTHOR]

Angular distributions of the 6Li(18O, 17O)7Li reaction were measured at Elab(18O) = 114 MeV for ground and excited states of exit nuclei. The data were analyzed within the coupled-reaction-channels method (CRC). The 6Li + 18O elastic and inelastic scattering channels as well as the simplest one- and two-step reactions were included in the coupledreaction- channels scheme. In CRC calculations, the 6Li + 18O potential with parameters deduced from the elastic scattering data, was used for the entrance reaction channel. The spectroscopic amplitudes of nucleons and clusters were calculated within the translational-invariant shell model. The 7Li + 17O potential parameters were deduced by fitting 6Li(18O, 17O)7Li reaction data. Isotopic differences of the 7Li + 17O, 7Li + 18O and 7Li + 16O potential, as well as the reaction mechanisms are studied [ABSTRACT FROM AUTHOR]

Angular distributions of the 6Li + 18O elastic and inelastic scattering as well as the 6Li(18O, X) reactions with production of 16,17,19O + 8,7,5Li, 14,15,16,17N + 10,9,8,7Be and 12,13,14C + 12,11,10B nuclei were measured at Elab(18O) = 114 MeV. The data were analyzed within the optical model and coupled-reaction-channels method. The 6Li + 18O optical potential parameters as well as deformation parameters of these nuclei were deduced and the scattering mechanisms were studied. The isotopic differences between the 6, 7Li + 18O and 6Li + 16, 18O scattering as well as their potential parameters were investigated. [ABSTRACT FROM AUTHOR]

Angular distributions of the 7Li + 14N elastic and inelastic scattering as well as the 7Li(14N, X) reactions with production of 13, 15, 16N + 8, 6, 5Li, 11, 12, 13, 14C + 10, 9, 8, 7Be, 10, 11, 12B + 11, 10, 9B nuclei and others were measured at Elab (14N) = 80 MeV. The data were analyzed within the optical model and coupled-reaction-channels method. The elastic and inelastic scattering, reorientations of 7Li and 14N in ground and excited states as well as the prominent one- and two-step transfers were included in a channels-coupling-scheme. The 7Li + 14N optical potential parameters for ground and excited states of 7Li and 14N as well as deformation parameters of these nuclei were deduced. The contributions of oneand two-step transfers in the 7Li + 14N elastic and inelastic scattering channels were estimated. [ABSTRACT FROM AUTHOR]

Experimental data of the 6Li + 16O elastic scattering at Ec.m = 3.27 - 36.8 MeV known from literature, were analyzed within the optical model and coupled-reaction-channels method. The 6Li + 16O elastic and inelastic scattering as well as the reorientation of 6Li and simplest transfer reactions were included in the coupled-channels-scheme. The 6Li + 16O potential parameters at different energies as well as their energy dependence were deduced accounting dispersion relation between real and imaginary parts of the potential. Contributions of the 6Li reorientation and transfer reactions to the 6Li + 16O elastic scattering data were estimated at different energies. Real part of the 6Li + 16O deduced potential and the 6Li + 16O folding-potential are compared. The isotopic differences between the 6Li + 16O and 7Li + 16O were studied. [ABSTRACT FROM AUTHOR]

New experimental data for differential cross sections of 14C(11B, 11B)14C inelastic scattering at the energy Elab.(11B) = 45 MeV for transitions of 11B nucleus to the excited states of 2,12 - 8,56 MeV were obtained. Experimental data were analyzed within optical model and coupled-reaction channels method. Elastic and inelastic scattering of nuclei, reorientation of spin of 11B and simplest transfers of nucleons and clusters were included in the coupling scheme. Woods - Saxon optical model parameters of 14C + 11B interaction and deformation parameters of 11B nucleus were deduced. Optical potential, deduced from the fit of experimental data, is compared to the respective foldingpotential, calculated by the method of double-folding. Isotopic differences of optical model potentials for 12,13,14C + 11B interaction, using the results of recent publications of 12,13C + 11B elastic and inelastic scattering at similar energies, were investigated. Contributions of one- and two-step transfers of nucleons and clusters into the elastic and inelastic channels of 14C + 11B scattering were defined. [ABSTRACT FROM AUTHOR]

New angular distributions for the 7Li(18O,17N)8Be reaction at an energy of Elab(18O)=114 MeV for the ground states of 8Be and 17N and the excited states of 17N were measured. These data and 18O(d,3He)17N reaction data taken at Ed=52 MeV were analyzed within the coupled-reaction-channels method using 7Li+18O and 18O+d optical potentials deduced from previous elastic and inelastic scattering results. Shell-model spectroscopic amplitudes were used in the analysis. Both reactions are dominated by single proton transfer. Calculations show that heavy-ion reactions of the type studied in this work can be used to identify final-state spins when measurements are carried to small angles. [ABSTRACT FROM AUTHOR]

Complete angular distributions of the 12C + 18O elastic and inelastic scattering were measured at the energy Elab(18O) = 105 MeV ( Ec.m. = 42 MeV) . Comparison of these elastic-scattering data with those from previously measured 12C + 16O data show their large-angle cross-sections to differ by as much as a factor of 100 with the 16O data being the largest. These and the 12C + 18O scattering data taken from the literature at the energies Ec.m. = 12.9-56 MeV were analysed within the optical model and coupled-reaction-channels methods. Sets of Woods-Saxon 12C + 18O optical potential parameters were obtained and their energy dependence was deduced. A similar analysis was carried out for 12C + 16O where it was shown that over a wide energy range, the primary difference in the 16O and 18O scattering potentials is in their imaginary parts. The large-angle enhancement for the 12C + 18O elastic-scattering was shown to arise from the transfer of nucleons. The inelastic-scattering data were well described over the entire angular range as arising from collective excitations of the states in the target and projectile nuclei. [ABSTRACT FROM AUTHOR]

The data for the 7Li + 9Be and 7Be + 9Be elastic scattering at the energies Elab(7Li) = 15.75 , 24, 30, 34, 63 and 130MeV and Elab(7Be) = 17 , 19 and 21MeV were analyzed within the optical model and coupled-reaction-channels method. The elastic and inelastic scattering, reorientation of 7Li , 7Be and 9Be as well as most important transfer reactions were included in the coupled-channels scheme. The resulting 7Li and 7Be potentials are very similar and have the same energy dependence. The real potential for recently derived 8Be + 9Be scattering potentials is very similar to that for 7Li , 7Be but the imaginary part of the 8Be one has a much greater strength at longer range. [ABSTRACT FROM AUTHOR]

The indirect method of the light exotic nuclei study in the experiments with the stable ion beams produced in many-nucleon-transfer reactions is presented. The data of elastic and inelastic scattering as well as of transfer reactions were analysed with the optical model (OM) and coupled-reactionchannels method (CRC). The potential parameters for the entrance reaction channel must be deduced from the analysis of the elastic and inelastic scattering data before the CRC-calculation of reaction cross-section. The results for the 12C(11B, 15N)8Be reaction are presented as an example. The energy dependence of optical potential parameters for this reaction are also presented. [ABSTRACT FROM AUTHOR]

Angular distributions of the 7Li + 10B elastic and inelastic scattering were measured at the energy E lab (10B) = 51 MeV (21 MeV c.m.). These and previously measured 7Li + 10B elastic-scattering data known at the 7Li-beam energies 24 MeV (14.1 MeV c.m.) and 39 MeV (22.94 MeV c.m.) were analyzed within the optical model and coupled-reaction channels method to determine the energy dependence of the parameters of the scattering potential and find the difference of these parameters from that of 7Li + 11B scattering. It was found that the 7Li + 11B potential parameters fail to describe the 7Li + 10B scattering data. The biggest difference is observed between the depths of the imaginary potentials that describe these scatterings. [ABSTRACT FROM AUTHOR]

Angular distributions of the12C(11B,15N)8Be reaction were measured at the energyElab(11 B) = 49 MeV for the transitions to the ground and 2.94 MeV (2+) excited state of8Be and to the ground and 5.270 MeV (5/2+) + 5.299 MeV (1/2+), 6.324 MeV (3/2-), 7.155 MeV (5/2+) + 7.301 MeV (3/2+), 7.567 MeV (7/2+) excited states of15N. The data were analyzed by the coupled-reaction-channel method. The elastic, inelastic scattering and one- and two-step transfers were included in the coupling scheme. The data of the12C(11B,8Be)15N reaction atEcm = 9.4-17.8 MeV known from the literature, were also included in the analysis. The mechanism of the12C(11B,15N)8Be reaction and the optical-model potential parameters for the15N +8Be channel were deduced. The energy dependence of the optical-model parameters for the15N +8Be channel was obtained. [ABSTRACT FROM AUTHOR]

Angular distributions of the 9Be+11B elastic and inelastic scattering were measured at Elab(11B)=45 MeV in a large angular range for the transitions to the ground and excited states of the 11B and 9Be nuclei. The data were analyzed within the coupled-reaction-channels (CRC) method. We have also included the data of the 11B+9Be elastic scattering at Ecm≈9–22 MeV known from the literature. The mechanisms of the 9Be+11B anomalous large angle scattering (ALAS) were studied both for the elastic and inelastic channels including the 9Be and 11B reorientations and transfer reactions. The optical potential parameters for the 9Be+11B elastic scattering and the 11B and 9Be deformation parameters were deduced. [Copyright &y& Elsevier]

The angular distributions of elastic and inelastic scattering of the 14N ions by the 7Li nuclei were measured for the transitions to the ground and 3.948 MeV (1+), 4.915 MeV (0−)+5.106 MeV (2−), 6.204 MeV (1+)+6.444 MeV (3+), 7.967 MeV (2−) excited states of the nucleus 14N and to the ground and 4.63 MeV (7/2−), 6.68 MeV (5/2−), 7.467 MeV (5/2−) excited states of the nucleus 7Li at Elab(14N)=110 MeV. The angular distribution of the reaction 7Li(14N, 15N)6Li was obtained simultaneously at the same energy. The experimental data were analyzed within coupled reaction channels (CRC) method. The elastic and inelastic scattering as well as transfers of clusters were included in the coupling scheme. We have concentrated on the study of the reaction mechanism at backward angles where anomalous large-angle scattering (ALAS) is observed. Unlike in many other reactions, the reorientation of 7Li was found to be by far the most dominant mechanism in this region. The deformation parameters for the nuclei of 7Li and 14N were obtained by fitting the experimental data for both elastic and inelastic scattering. The deformation parameters of 7Li obtained from the analysis of elastic and inelastic channels coincide. Good agreement between measured and calculated cross sections was achieved. [Copyright &y& Elsevier]