Электронный каталог

Статья

Lukyanov, S.M.
Two-Body Mechanisms in Light-Ion Reactions with *9Be / S.M.Lukyanov, A.V.Shakhov. – Text : electronic // Advances in Nuclear Science and Applications. – 2025. – Vol. 1, No. 2. – P. 80-90. – URL: https://doi.org/10.63907/ansa.v1i2.36. – Bibliogr.: 23.

Few-nucleon transfer reactions induced by light projectiles (d,*3He, and *4He) on the weakly bound nucleus were investigated at incident energies of 26-35 MeV. Inclusive energy spectra and angular distributions were measured for outgoing fragments (p,d,t, *4He, *7Li, and *7Be), allowing reconstruction of excitation energy spectra for the complementary residual nuclei. The observed spectral shapes are consistent with discrete level populations in both bound and unbound systems, supporting a dominant two-body reaction mechanism. Special attention was given to channels involving short-lived unbound nuclei (*5He, *5Li, and *8Be). The extracted energy peaks and widths indicate population of these systems predominantly in their ground states. Comparisons with phase-space models and kinematic simulations exclude a statistical three-body decay scenario and confirm the formation of binary final states. A time-scale analysis based on resonance widths yields equilibration times shorter than 10&sup-22) s, suggesting that energy sharing occurs rapidly in these reactions. These findings support a cluster-transfer picture in which preformed configurations, such as and clusters, are coherently transferred. The results provide new constraints on reaction dynamics and cluster structure in light nuclei.



ОИЯИ = ОИЯИ (JINR)2025