Heavy lithium isotope 11,12Li production in pion absorption reactions on a 14C radioactive target |
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| Authors: | Yu. B. Gurov E. M. Kalinin V. S. Karpukhin S. V. Lapushkin I. V. Laukhin V. A. Pechkurov V. G. Sandukovsky B. A. Chernyshev T. D. Shchurenkova |
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| Affiliation: | 1.National Research Nuclear University (MEPhI),Moscow,Russia |
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| Abstract: | The results from an experimental search for the production of heavy lithium isotopes 11,12Li in stopped π−-meson absorption reactions on a 14C radioactive target are presented. A pronounced peak is observed in the missing mass spectrum of the 14C(π−, pp)X reaction, which is associated with the formation of a nucleon-unstable 12Li state with the following resonance parameters: E R = 4.0 ± 0.2 MeV and Γ = 1.1 ± 0.2 MeV. Resonance parameters of three low-lying 11Li excited states were determined in the 14C(π−, pd)X, reaction. |
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