scholarly journals Coupled reaction channels study of the ¹⁶O(d,⁶Li) reaction

2021 ◽  
Vol 10 (2) ◽  
pp. 52-59
Author(s):  
Cuong Do Cong ◽  
Phuc Nguyen Hoang ◽  
Phuc Nguyen Tri Toan
Keyword(s):  
Transfer Processes ◽  
Spectroscopic Factors ◽  
Reaction Data ◽  
Reaction Channels ◽  
Best Fit ◽  
Coupled Reaction

The transfer 16O(d,6Li)12C reaction has been studied within the coupled reaction channels (CRC) approach, inluding both the direct and indirect α transfer processes. The obtained results show an important contribution of the indirect α transfer via the 2+ and 4+ states of 12C. The  CRC results show that the best-fit α spectroscopic factors of 16O becomes smaller when the indirect transfer processes are taken into account. The α spectroscopic factors deduced from the present CRC analysis of the 16O(d,6Li)12C reaction data measured at Ed=54.25 and 80 MeV are quite close to each other.

scholarly journals 12С(15N,14N)13C reaction mechanisms at energy 81 MeV

2020 ◽  
Vol 21 (4) ◽  
pp. 295-301
Author(s):  
A.T. Rudchik ◽  
◽  
A.A. Rudchik ◽  
O.E. Kutsyk ◽  
K. Rusek ◽  
...  
Keyword(s):  
Experimental Data ◽  
Cross Sections ◽  
Nuclear Interaction ◽  
Reaction Cross ◽  
Coupling Scheme ◽  
Spectroscopic Factors ◽  
Reaction Data ◽  
Reaction Channels ◽  
Potential Parameters ◽  
Coupled Reaction

The new experimental data of the 12С(15N,14N)13С reaction cross-sections at the energy Еlab(15N) = 81 MeV were measured for the ground and excited states of 14N and 13C nuclei. The experimental data were analyzed within the coupled-reaction-channels method (CRC) using channels-coupling scheme with the 15N + 12С elastic scattering and one- as well as two-step transfers of nucleons and clusters performing CRC-calculations with the Woods - Saxon potentials (WS) for the entrance and exit reaction channels. The WS potential parameters for the 12С + 15N nuclear interaction were taken from the previously studied elastic and inelastic scattering of 15N ions by 12С nuclei at the energy 81 MeV, and the WS potential parameters for the 14N + 13С reaction exit channel were deduced from fitting of the 12С(15N,14N)13C reaction data. The spectroscopic factors (amplitudes) of transferred in the reaction nucleons and clusters, used in the CRC-calculations, were computed within translational invariant shell model of 1p-shell. It was found that transfers of neutrons (n) and deuterons (d) dominate in this reaction. Multi-step transfers of nucleons and clusters give small contributions to the reaction data.

Coupled reaction channels effects in the elastic scattering ofS32,36+58,64Ni

1990 ◽  
Vol 41 (3) ◽  
pp. 1018-1030 ◽  
Author(s):  
A. M. Stefanini ◽  
A. Tivelli ◽  
G. Montagnoli ◽  
D. R. Napoli ◽  
D. Bonamini ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Reaction Channels ◽  
Coupled Reaction

scholarly journals ELASTIC AND INELASTIC ALPHA TRANSFER IN THE 16O+12C SCATTERING

2021 ◽  
Vol 31 (4) ◽  
Author(s):  
Phuc Hoang Nguyen ◽  
Phuc Tri Toan Nguyen ◽  
Khoa Tien Dao
Keyword(s):  
Cross Section ◽  
Heavy Ion ◽  
Scattering Cross Section ◽  
Transition Strength ◽  
Valence Nucleon ◽  
The Core ◽  
Scattering Cross ◽  
Oscillatory Pattern ◽  
Reaction Channels ◽  
Coupled Reaction

The elastic scattering cross section measured at energies $E\lesssim 10$ MeV/nucleon for some light heavy-ion systems having two identical cores like \oc exhibits an enhanced oscillatory pattern at the backward angles. Such a pattern is known to be due to the transfer of the valence nucleon or cluster between the two identical cores. In particular, the elastic $\alpha$ transfer has been shown to originate directly from the core-exchange symmetry in the elastic \oc scattering. Given the strong transition strength of the $2^+_1$ state of $^{12}$C and its large overlap with the $^{16}$O ground state, it is natural to expect a similar $\alpha$ transfer process (or inelastic $\alpha$ transfer) to take place in the inelastic \oc scattering. The present work provides a realistic coupled channel description of the $\alpha$ transfer in the inelastic \oc scattering at low energies. Based on the results of the 4 coupled reaction-channels calculation, we show a significant contribution of the $\alpha$ transfer to the inelastic \oc scattering cross section at the backward angles. These results suggest that the explicit coupling to the $\alpha$ transfer channels is crucial in the studies of the elastic and inelastic scattering of a nucleus-nucleus system with the core-exchange symmetry.\Keywords{optical potential, coupled reaction channels, inelastic $\alpha$ transfer

scholarly journals Elastic and inelastic scattering of 15N ions by 13C nuclei at energy 84 MeV

2021 ◽  
Vol 22 (1) ◽  
pp. 10-18
Author(s):  
A.T. Rudchik ◽  
◽  
A.A. Rudchik ◽  
O.E. Kutsyk ◽  
K. Rusek ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Transfer Reactions ◽  
Coupling Scheme ◽  
Elastic And Inelastic Scattering ◽  
Deformation Parameters ◽  
Cluster Transfer ◽  
Reaction Channels ◽  
Potential Parameters ◽  
Coupled Reaction

New experimental data of the 15N + 13C elastic and inelastic scattering were obtained at the energy Elab(15N) = 84 MeV. The data were analyzed within the coupled-reaction-channels method. The elastic and inelastic scattering of nuclei 15N + 13С as well as the more important nucleon and cluster transfer reactions were included in the channels-coupling scheme. The WS potential parameters for the 15N + 13С nuclei interactions in ground and excited states as well as deformation parameters of these nuclei were deduced. The contributions of one- and two-step transfers in the 15N + 13C elastic and inelastic scattering were estimated. The results of the 15N + 13С elastic scattering at the energy Elab(15N) = 84 MeV, obtained in this work, were compared with that of the 15N + 12С elastic scattering at the energy Elab(15N) = 81 MeV.

Coupled-Reaction-Channels Study of (h,t) Reactions

1973 ◽  
Vol 7 (3) ◽  
pp. 1154-1165 ◽  
Author(s):  
W. R. Coker ◽  
T. Udagawa ◽  
H. H. Wolter
Keyword(s):  
Reaction Channels ◽  
Coupled Reaction

8Be DIRECT TRANSFER IN α+12C INELASTIC SCATTERING AND SIGNATURES OF THE ALPHA PARTICLE CONDENSATION IN THE NEAR-3α THRESHOLD STATES OF 12C

2011 ◽  
Vol 20 (04) ◽  
pp. 966-970 ◽  
Author(s):  
T. L. BELYAEVA ◽  
A. S. DEMYANOVA ◽  
A. A. OGLOBLIN ◽  
S. A. GONCHAROV
Keyword(s):  
Ground State ◽  
Orbital Motion ◽  
Direct Transfer ◽  
Hoyle State ◽  
Model Calculations ◽  
Relative Angular Momentum ◽  
Cluster Configuration ◽  
Reaction Channels ◽  
Condensed Structure ◽  
Coupled Reaction

The coupled reaction channels model calculations of the direct 8 Be transfer in the α+12 C elastic and inelastic (to the 7.65 MeV [Formula: see text] and the 9.65 MeV [Formula: see text] states) scattering have been performed. It is shown that the cluster configuration with zero relative angular momentum dominates in [Formula: see text] state being 4.4 times larger than that in the ground state. In the [Formula: see text] state, a dominance of the p-orbital motion is found. The condensed properties are confirmed in the Hoyle state. The 3α exotic, but hardly a condensed structure of the [Formula: see text] state is found.

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