Search for heavy lithium isotopes 10-12Li in stopped pion absorption reactions

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

Chernyshev, B.A.^1 ; Gurov, Yu. B.^1 ; Korotkova, L.Yu.^1 ; Lapushkin, S.V.^1 ; Pritula, R.V.^1 ; Sandukovskiy, V.G.^1

National Research Nuclear University MEPhI, Moscow

115409, Russia^1

关键词: Absorption reactions;    Highly excited state;    Lithium isotopes;    Low-lying excited state;    Measurements of;    Resonance energies;    Resonance parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/724/1/012024/pdf
DOI  :  10.1088/1742-6596/724/1/012024

来源: IOP

【 摘 要 】

The experimental search for the production of heavy lithium isotopes10-12Li was carried out in the stopped ®--mesons absorption reactions on the targets11B,12,14C. Study of10Li was performed in the correlation and inclusive measurements of reactions12C(®-,pp)X,14C(®-,pt)X,14C(®-,dd)X and11B(®-,p)X. Three highly excited states of10Li with the resonance energies Er= 6.1 ± 0.1 MeV, 7.8 ± 0.1 MeV and 10.1 ± 0.1 MeV were identified together with the well-known levels. The resonance parameters of three low-lying excited states of11Li were determined in the14C(®-,pd)X reaction. In the14C(®-,pp)X reaction12Li excited state with Er= 4.0 ± 0.2 MeV and an indication on a level with Er≈ 7 MeV were found.