Cluster Structure of 9Be from 3He+9Be Reaction

21st International School on Nuclear Physics and Applications & International Symposium on Exotic Nuclei

Lukyanov, S.M.^1 ; Harakeh, M.N.^2 ; Naumenko, M.A.^1 ; Xu, Yi^3 ; Trzaska, W.H.^4 ; Burjan, V.^3 ; Kroha, V.^3 ; Mrazek, J.^3 ; Glagolev, V.^3 ; Pisko, Š.^3 ; Voskoboynik, E.I.^1 ; Khlebnikov, S.V.^5 ; Penionzhkevich, Yu.E.^1,6 ; Skobelev, N.K.^1 ; Sobolev, Yu.G.^1 ; Tyurin, G.P.^3 ; Kuterbekov, K.^7 ; Tuleushev, Yu^8

Flerov Laboratory of Nuclear Reactions, Dubna, Russia^1

KVI-CART, University of Groningen, Groningen, Netherlands^2

Nuclear Physics Institute, e, Czech Republic^3

Department of Physics, University of Jyväskylä, Jyväskylä, Finland^4

Khlopin Institute, St. Petersburg, Russia^5

National Research Nuclear University MEPhI, Moscow, Russia^6

Eurasian Gumilev University, Astana, Kazakhstan^7

Nuclear Physics Institute, Almaty, Kazakhstan^8

关键词: Cluster configurations;    Cluster structure;    Cluster transfer;    Reaction channels;    Relative strength;    Scattering angles;    Transfer channel;    Transfer reaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/724/1/012031/pdf
DOI  :  10.1088/1742-6596/724/1/012031

来源: IOP

【 摘 要 】

The study of inelastic scattering and multi-nucleon transfer reactions was performed by bombarding a9Be target with a3He beam at an incident energy of 30 MeV. Angular distributions for9Be(3He,3He)9Be,9Be(3He,4He)8Be,9Be(3He,7Be)5He,9Be(3He,6Li)6Li and9Be(3He,7Li)5Li reaction channels were measured. Cross sections for channels leading to unbound5Heg.s.,5Lig.s. and8Be systems were obtained from singles measurements where the relationship between the energy and the scattering angle of the observed stable ejectile is constrained by two-body kinematics. Information on the cluster structure of9Be was obtained from the transfer channels. It was concluded that cluster transfer is an important mechanism in the investigated nuclear reactions. In the present work an attempt was made to estimate the relative strengths of the interesting8Be+n and5He+α cluster configurations in9Be. The branching ratios have been determined confirming that the5He+α configuration plays an important role. The configuration of9Be consisting of two bound helium clusters3He+6He is significantly suppressed, whereas the two-body configurations8Be+n and5He+α including unbound8Be and5He are found more probable.