Some Insights into Cluster Structure of <sup>9</sup>Be from <sup>3</sup>He + <sup>9</sup>Be Reaction

Abstract

The study of inelastic scattering and multi-nucleon transfer reactions was performed by bombarding a 9 Be target with a 3 He beam at the incident energy of 30 MeV. Angular distributions for 9 Be(3 He, 3 He) 9 Be, 9 Be(3 He, 4 He) 8 Be, 9 Be(3 He, 7 Be) 5 He, 9 Be(3 He, 6 Li) 6 Li and 9 Be(3 He, 7 Li) 5 Li reaction channels were measured. Experimental angular distributions for the corresponding ground states (g.s.) were analyzed within the framework of the optical model, the coupled-channel approach and the distorted-wave Born approximation. Cross sections for channels leading to unbound 5 Heg.s., 5 Lig.s. and 8 Be systems were obtained from singles measurements where the relationship between the energy and the scattering angle of the observed stable ejectile was constrained by two-body kinematics. Information on the cluster structure of 9 Be was obtained from the transfer channels. It was concluded that cluster transfer was an important mechanism in the investigated nuclear reaction channels. In the present work an attempt was made to estimate the relative strengths of the interesting (n + 8 Be) and (α + 5 He) cluster configurations in 9 Be. The contributions of different exit channels have been determined confirming that the (α + 5 He) configuration plays an important role. The configuration of 9 Be consisting of two bound helium clusters (3 He + 6 He) is significantly suppressed, whereas the two-body configurations (n + 8 Be) and (α + 5 He) including unbound 8 Be and 5 He are found more probable.

Clusterization and strong coupled-channels effects in deuteron interaction with 9Be nuclei

“…It should be noted that a similar result was reported earlier in [18]. One-step transfer of the 5 He cluster was also indicated as a dominant process by Jarczyk et al [33] in studying the 12 C( 11 B, 6 Li) 17 O and 12 C(d, 7 Li) 7 Be reactions.…”

“…In our previous works [5][6][7], the 3 He interaction with 9 Be was studied and angular distributions of the reaction products in the following exit channels: 3 He + 9 Be, 5 He + 7 Be, 5 Li + 7 Li, 6 Be + 6 He, and 6 Li + 6 Li, were measured. The obtained data were analysed within the framework of the optical model (OM), the coupled-channel (CC) and the distorted-wave Born approximation (DWBA) approaches.…”

Theoretical Study on 10C Elastic Scattering Cross Sections Using Different Cluster Density Distributions and Different Potentials

“…The cluster model density distribution has been used successfully to analyze elastic scattering cross sections of unstable projectile nuclei (see, e.g., Refs. [23,24,25,26,27,28]. Four different forms of cluster density distributions of the projectile nucleus are considered in this study and each is presented in the following section.…”

Analysis of 9Be Fusion Cross Sections via a Simple Cluster Model

“…Thus, a structure consisting of nucleons can be thought as one body [1]. In this respect, the 9 Be nucleus can be assumed as α + α + n, d + 7 Li, 3 H + 6 Li, 3 He + 6 He and n + 8 Be cluster structures [2][3][4] although the cluster structure of 9 Be is not known exactly yet [5]. Therefore, cluster structure is still a hot topic, and many studies can be found in the literature.…”